31012132032231 has 24 divisors (see below), whose sum is σ = 48147013761264. Its totient is φ = 17704063117440.

The previous prime is 31012132032169. The next prime is 31012132032251. The reversal of 31012132032231 is 13223023121013.

It is not a de Polignac number, because 31012132032231 - 2²¹ = 31012129935079 is a prime.

It is a super-2 number, since 2×31012132032231² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012132032251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101961840 + ... + 102265541.

It is an arithmetic number, because the mean of its divisors is an integer number (2006125573386).

Almost surely, 2^{31012132032231} is an apocalyptic number.

31012132032231 is a deficient number, since it is larger than the sum of its proper divisors (17134881729033).

31012132032231 is a wasteful number, since it uses less digits than its factorization.

31012132032231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204228431 (or 204228424 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31012132032231 its reverse (13223023121013), we get a palindrome (44235155153244).

The spelling of 31012132032231 in words is "thirty-one trillion, twelve billion, one hundred thirty-two million, thirty-two thousand, two hundred thirty-one".