1051312516 has 12 divisors (see below), whose sum is σ = 1842232588. Its totient is φ = 524960352.

The previous prime is 1051312513. The next prime is 1051312621. The reversal of 1051312516 is 6152131501.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 609892416 + 441420100 = 24696^2 + 21010^2 .

It is a super-2 number, since 2×1051312516² = 2210516012596500512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1051312511) 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, 170571 + ... + 176626.

Almost surely, 2^1051312516 is an apocalyptic number.

It is an amenable number.

1051312516 is a deficient number, since it is larger than the sum of its proper divisors (790920072).

1051312516 is a wasteful number, since it uses less digits than its factorization.

1051312516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347958 (or 347956 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 1051312516 is about 32423.9497285571. The cubic root of 1051312516 is about 1016.8196841199.

The spelling of 1051312516 in words is "one billion, fifty-one million, three hundred twelve thousand, five hundred sixteen".