651361312 has 36 divisors (see below), whose sum is σ = 1491737310. Its totient is φ = 279154176.

The previous prime is 651361309. The next prime is 651361331. The reversal of 651361312 is 213163156.

It can be written as a sum of positive squares in only one way, i.e., 468462736 + 182898576 = 21644^2 + 13524^2 .

It is a super-2 number, since 2×651361312² = 848543117540722688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 206137 + ... + 209272.

Almost surely, 2^651361312 is an apocalyptic number.

It is an amenable number.

651361312 is an abundant number, since it is smaller than the sum of its proper divisors (840375998).

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

651361312 is a wasteful number, since it uses less digits than its factorization.

651361312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415433 (or 415418 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 651361312 is about 25521.7811290670. The cubic root of 651361312 is about 866.8434127360.

The spelling of 651361312 in words is "six hundred fifty-one million, three hundred sixty-one thousand, three hundred twelve".