131204140431 has 24 divisors (see below), whose sum is σ = 219154171824. Its totient is φ = 69206578560.

The previous prime is 131204140429. The next prime is 131204140477. The reversal of 131204140431 is 134041402131.

It is not a de Polignac number, because 131204140431 - 2¹ = 131204140429 is a prime.

It is a super-2 number, since 2×131204140431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131204140411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34326750 + ... + 34330571.

It is an arithmetic number, because the mean of its divisors is an integer number (9131423826).

Almost surely, 2^131204140431 is an apocalyptic number.

131204140431 is a deficient number, since it is larger than the sum of its proper divisors (87950031393).

131204140431 is a wasteful number, since it uses less digits than its factorization.

131204140431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68657351 (or 68657344 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 131204140431 its reverse (134041402131), we get a palindrome (265245542562).

The spelling of 131204140431 in words is "one hundred thirty-one billion, two hundred four million, one hundred forty thousand, four hundred thirty-one".