613431312 has 40 divisors (see below), whose sum is σ = 1706599104. Its totient is φ = 188747904.

The previous prime is 613431307. The next prime is 613431323. The reversal of 613431312 is 213134316.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490908 + ... + 492155.

Almost surely, 2^613431312 is an apocalyptic number.

It is an amenable number.

613431312 is an abundant number, since it is smaller than the sum of its proper divisors (1093167792).

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

613431312 is a wasteful number, since it uses less digits than its factorization.

613431312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983087 (or 983081 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

The square root of 613431312 is about 24767.5455384663. The cubic root of 613431312 is about 849.6798388234.

Adding to 613431312 its reverse (213134316), we get a palindrome (826565628).

The spelling of 613431312 in words is "six hundred thirteen million, four hundred thirty-one thousand, three hundred twelve".