130403731 has 8 divisors (see below), whose sum is σ = 131418704. Its totient is φ = 129392640.

The previous prime is 130403723. The next prime is 130403737. The reversal of 130403731 is 137304031.

It is a happy number.

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 130403731 - 2³ = 130403723 is a prime.

It is a super-2 number, since 2×130403731² = 34010266117440722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130403737) 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, 110776 + ... + 111946.

It is an arithmetic number, because the mean of its divisors is an integer number (16427338).

Almost surely, 2^130403731 is an apocalyptic number.

130403731 is a deficient number, since it is larger than the sum of its proper divisors (1014973).

130403731 is a wasteful number, since it uses less digits than its factorization.

130403731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 130403731 is about 11419.4453017649. The cubic root of 130403731 is about 507.1035751703.

Adding to 130403731 its reverse (137304031), we get a palindrome (267707762).

The spelling of 130403731 in words is "one hundred thirty million, four hundred three thousand, seven hundred thirty-one".