1312413500 has 48 divisors (see below), whose sum is σ = 2869924512. Its totient is φ = 524304000.

The previous prime is 1312413463. The next prime is 1312413503. The reversal of 1312413500 is 53142131.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312413503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 659507 + ... + 661493.

It is an arithmetic number, because the mean of its divisors is an integer number (59790094).

Almost surely, 2^1312413500 is an apocalyptic number.

1312413500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312413500 is an abundant number, since it is smaller than the sum of its proper divisors (1557511012).

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

1312413500 is a wasteful number, since it uses less digits than its factorization.

1312413500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327 (or 3315 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1312413500 is about 36227.2480323858. The cubic root of 1312413500 is about 1094.8557318464.

Adding to 1312413500 its reverse (53142131), we get a palindrome (1365555631).

The spelling of 1312413500 in words is "one billion, three hundred twelve million, four hundred thirteen thousand, five hundred".