131231143234401 has 64 divisors (see below), whose sum is σ = 208557847111680. Its totient is φ = 71812125665280.

The previous prime is 131231143234361. The next prime is 131231143234427. The reversal of 131231143234401 is 104432341132131.

It is a happy number.

It is not a de Polignac number, because 131231143234401 - 2¹⁷ = 131231143103329 is a prime.

It is a super-2 number, since 2×131231143234401² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131231143234441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 148506865 + ... + 149387921.

It is an arithmetic number, because the mean of its divisors is an integer number (3258716361120).

Almost surely, 2^{131231143234401} is an apocalyptic number.

It is an amenable number.

131231143234401 is a deficient number, since it is larger than the sum of its proper divisors (77326703877279).

131231143234401 is a wasteful number, since it uses less digits than its factorization.

131231143234401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883094.

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 131231143234401 its reverse (104432341132131), we get a palindrome (235663484366532).

The spelling of 131231143234401 in words is "one hundred thirty-one trillion, two hundred thirty-one billion, one hundred forty-three million, two hundred thirty-four thousand, four hundred one".