131023034021 has 16 divisors (see below), whose sum is σ = 151042570560. Its totient is φ = 112403681280.

The previous prime is 131023034017. The next prime is 131023034027. The reversal of 131023034021 is 120430320131.

It is not a de Polignac number, because 131023034021 - 2² = 131023034017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131023033984 and 131023034002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131023034027) 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, 1165946 + ... + 1273371.

It is an arithmetic number, because the mean of its divisors is an integer number (9440160660).

Almost surely, 2^131023034021 is an apocalyptic number.

131023034021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131023034021 is a deficient number, since it is larger than the sum of its proper divisors (20019536539).

131023034021 is a wasteful number, since it uses less digits than its factorization.

131023034021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2439604.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 131023034021 its reverse (120430320131), we get a palindrome (251453354152).

The spelling of 131023034021 in words is "one hundred thirty-one billion, twenty-three million, thirty-four thousand, twenty-one".