31380938 has 8 divisors (see below), whose sum is σ = 47442432. Its totient is φ = 15566796.

The previous prime is 31380931. The next prime is 31380941. The reversal of 31380938 is 83908313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31380898 and 31380907.

It is not an unprimeable number, because it can be changed into a prime (31380931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61520 + ... + 62027.

It is an arithmetic number, because the mean of its divisors is an integer number (5930304).

Almost surely, 2^31380938 is an apocalyptic number.

31380938 is a deficient number, since it is larger than the sum of its proper divisors (16061494).

31380938 is a wasteful number, since it uses less digits than its factorization.

31380938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123676.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 31380938 is about 5601.8691523455. The cubic root of 31380938 is about 315.4195735835.

The spelling of 31380938 in words is "thirty-one million, three hundred eighty thousand, nine hundred thirty-eight".