131222332031 has 16 divisors (see below), whose sum is σ = 152495239680. Its totient is φ = 110582794080.

The previous prime is 131222332027. The next prime is 131222332037. The reversal of 131222332031 is 130233222131.

It is a cyclic number.

It is not a de Polignac number, because 131222332031 - 2² = 131222332027 is a prime.

It is a super-2 number, since 2×131222332031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131222331988 and 131222332006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131222332037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900230 + ... + 1035788.

It is an arithmetic number, because the mean of its divisors is an integer number (9530952480).

Almost surely, 2^131222332031 is an apocalyptic number.

131222332031 is a deficient number, since it is larger than the sum of its proper divisors (21272907649).

131222332031 is a wasteful number, since it uses less digits than its factorization.

131222332031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137894.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 131222332031 its reverse (130233222131), we get a palindrome (261455554162).

The spelling of 131222332031 in words is "one hundred thirty-one billion, two hundred twenty-two million, three hundred thirty-two thousand, thirty-one".