130311121231 has 4 divisors (see below), whose sum is σ = 134804608200. Its totient is φ = 125817634264.

The previous prime is 130311121211. The next prime is 130311121277. The reversal of 130311121231 is 132121113031.

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 130311121231 - 2⁷ = 130311121103 is a prime.

It is a super-2 number, since 2×130311121231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130311121199 and 130311121208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130311121201) 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, 2246743441 + ... + 2246743498.

It is an arithmetic number, because the mean of its divisors is an integer number (33701152050).

Almost surely, 2^130311121231 is an apocalyptic number.

130311121231 is a deficient number, since it is larger than the sum of its proper divisors (4493486969).

130311121231 is an equidigital number, since it uses as much as digits as its factorization.

130311121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4493486968.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 130311121231 its reverse (132121113031), we get a palindrome (262432234262).

The spelling of 130311121231 in words is "one hundred thirty billion, three hundred eleven million, one hundred twenty-one thousand, two hundred thirty-one".