131121133031 has 16 divisors (see below), whose sum is σ = 152328583680. Its totient is φ = 110533114080.

The previous prime is 131121133019. The next prime is 131121133061. The reversal of 131121133031 is 130331121131.

It is a cyclic number.

It is not a de Polignac number, because 131121133031 - 2²² = 131116938727 is a prime.

It is a super-2 number, since 2×131121133031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131121132994 and 131121133012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131121133001) 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, 4708310 + ... + 4736076.

It is an arithmetic number, because the mean of its divisors is an integer number (9520536480).

Almost surely, 2^131121133031 is an apocalyptic number.

131121133031 is a deficient number, since it is larger than the sum of its proper divisors (21207450649).

131121133031 is a wasteful number, since it uses less digits than its factorization.

131121133031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38894.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 131121133031 its reverse (130331121131), we get a palindrome (261452254162).

The spelling of 131121133031 in words is "one hundred thirty-one billion, one hundred twenty-one million, one hundred thirty-three thousand, thirty-one".