130311221231 has 4 divisors (see below), whose sum is σ = 133341714792. Its totient is φ = 127280727672.

The previous prime is 130311221197. The next prime is 130311221329. The reversal of 130311221231 is 132122113031.

It is a happy number.

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 130311221231 - 2¹⁸ = 130310959087 is a prime.

It is a super-2 number, since 2×130311221231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130311221431) 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, 1515246716 + ... + 1515246801.

It is an arithmetic number, because the mean of its divisors is an integer number (33335428698).

Almost surely, 2^130311221231 is an apocalyptic number.

130311221231 is a deficient number, since it is larger than the sum of its proper divisors (3030493561).

130311221231 is an equidigital number, since it uses as much as digits as its factorization.

130311221231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030493560.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 130311221231 its reverse (132122113031), we get a palindrome (262433334262).

The spelling of 130311221231 in words is "one hundred thirty billion, three hundred eleven million, two hundred twenty-one thousand, two hundred thirty-one".