231156313132 has 12 divisors (see below), whose sum is σ = 422111528496. Its totient is φ = 110553019280.

The previous prime is 231156313103. The next prime is 231156313133. The reversal of 231156313132 is 231313651132.

It is a happy number.

It is a super-2 number, since 2×231156313132² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231156313094 and 231156313103.

It is not an unprimeable number, because it can be changed into a prime (231156313133) 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, 1256284219 + ... + 1256284402.

It is an arithmetic number, because the mean of its divisors is an integer number (35175960708).

Almost surely, 2^231156313132 is an apocalyptic number.

It is an amenable number.

231156313132 is a deficient number, since it is larger than the sum of its proper divisors (190955215364).

231156313132 is a wasteful number, since it uses less digits than its factorization.

231156313132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512568648 (or 2512568646 counting only the distinct ones).

The product of its digits is 9720, while the sum is 31.

Adding to 231156313132 its reverse (231313651132), we get a palindrome (462469964264).

The spelling of 231156313132 in words is "two hundred thirty-one billion, one hundred fifty-six million, three hundred thirteen thousand, one hundred thirty-two".