513072631 has 8 divisors (see below), whose sum is σ = 543551904. Its totient is φ = 482626560.

The previous prime is 513072619. The next prime is 513072641. The reversal of 513072631 is 136270315.

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

It is a cyclic number.

It is not a de Polignac number, because 513072631 - 2⁷ = 513072503 is a prime.

It is a super-2 number, since 2×513072631² = 526487049362524322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 513072631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513072641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28126 + ... + 42628.

It is an arithmetic number, because the mean of its divisors is an integer number (67943988).

Almost surely, 2^513072631 is an apocalyptic number.

513072631 is a deficient number, since it is larger than the sum of its proper divisors (30479273).

513072631 is a wasteful number, since it uses less digits than its factorization.

513072631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16601.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 513072631 is about 22651.1066175584. The cubic root of 513072631 is about 800.5582723036.

The spelling of 513072631 in words is "five hundred thirteen million, seventy-two thousand, six hundred thirty-one".