131978296253 has 4 divisors (see below), whose sum is σ = 133837145568. Its totient is φ = 130119446940.

The previous prime is 131978296231. The next prime is 131978296259. The reversal of 131978296253 is 352692879131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 352692879131 = 59 ⋅5977845409.

It is a cyclic number.

It is not a de Polignac number, because 131978296253 - 2²² = 131974101949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131978296259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 929424551 + ... + 929424692.

It is an arithmetic number, because the mean of its divisors is an integer number (33459286392).

Almost surely, 2^131978296253 is an apocalyptic number.

It is an amenable number.

131978296253 is a deficient number, since it is larger than the sum of its proper divisors (1858849315).

131978296253 is an equidigital number, since it uses as much as digits as its factorization.

131978296253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858849314.

The product of its digits is 4898880, while the sum is 56.

The spelling of 131978296253 in words is "one hundred thirty-one billion, nine hundred seventy-eight million, two hundred ninety-six thousand, two hundred fifty-three".