730115631 has 48 divisors (see below), whose sum is σ = 1238265600. Its totient is φ = 414363600.

The previous prime is 730115623. The next prime is 730115647. The reversal of 730115631 is 136511037.

It is not a de Polignac number, because 730115631 - 2³ = 730115623 is a prime.

It is a super-2 number, since 2×730115631² = 1066137669261056322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 730115595 and 730115604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730115621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 502456 + ... + 503906.

It is an arithmetic number, because the mean of its divisors is an integer number (25797200).

Almost surely, 2^730115631 is an apocalyptic number.

730115631 is a deficient number, since it is larger than the sum of its proper divisors (508149969).

730115631 is a wasteful number, since it uses less digits than its factorization.

730115631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641 (or 1624 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 730115631 is about 27020.6519351403. The cubic root of 730115631 is about 900.4588734068.

Adding to 730115631 its reverse (136511037), we get a palindrome (866626668).

The spelling of 730115631 in words is "seven hundred thirty million, one hundred fifteen thousand, six hundred thirty-one".