331900740 has 240 divisors, whose sum is σ = 1126984320. Its totient is φ = 81492480.

The previous prime is 331900733. The next prime is 331900753. The reversal of 331900740 is 47009133.

It is a super-2 number, since 2×331900740² = 220316202425095200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1261849 + ... + 1262111.

It is an arithmetic number, because the mean of its divisors is an integer number (4695768).

Almost surely, 2^331900740 is an apocalyptic number.

331900740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331900740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (563492160).

331900740 is an abundant number, since it is smaller than the sum of its proper divisors (795083580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331900740 is a wasteful number, since it uses less digits than its factorization.

331900740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 331900740 is about 18218.1431545589. The cubic root of 331900740 is about 692.3665432023.

Adding to 331900740 its reverse (47009133), we get a palindrome (378909873).

The spelling of 331900740 in words is "three hundred thirty-one million, nine hundred thousand, seven hundred forty".