130235731 has 4 divisors (see below), whose sum is σ = 133006752. Its totient is φ = 127464712.

The previous prime is 130235711. The next prime is 130235737. The reversal of 130235731 is 137532031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130235731 - 2⁹ = 130235219 is a prime.

It is a super-2 number, since 2×130235731² = 33922691258208722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130235696 and 130235705.

It is not an unprimeable number, because it can be changed into a prime (130235737) 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, 1385440 + ... + 1385533.

It is an arithmetic number, because the mean of its divisors is an integer number (33251688).

Almost surely, 2^130235731 is an apocalyptic number.

130235731 is a deficient number, since it is larger than the sum of its proper divisors (2771021).

130235731 is an equidigital number, since it uses as much as digits as its factorization.

130235731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771020.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 130235731 is about 11412.0870571513. The cubic root of 130235731 is about 506.8857132752.

Adding to 130235731 its reverse (137532031), we get a palindrome (267767762).

The spelling of 130235731 in words is "one hundred thirty million, two hundred thirty-five thousand, seven hundred thirty-one".