2131251357 has 4 divisors (see below), whose sum is σ = 2841668480. Its totient is φ = 1420834236.

The previous prime is 2131251349. The next prime is 2131251373. The reversal of 2131251357 is 7531521312.

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.

It is not a de Polignac number, because 2131251357 - 2³ = 2131251349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131251347) 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, 355208557 + ... + 355208562.

It is an arithmetic number, because the mean of its divisors is an integer number (710417120).

Almost surely, 2^2131251357 is an apocalyptic number.

It is an amenable number.

2131251357 is a deficient number, since it is larger than the sum of its proper divisors (710417123).

2131251357 is an equidigital number, since it uses as much as digits as its factorization.

2131251357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710417122.

The product of its digits is 6300, while the sum is 30.

The square root of 2131251357 is about 46165.4779786801. The cubic root of 2131251357 is about 1286.9002669085.

Adding to 2131251357 its reverse (7531521312), we get a palindrome (9662772669).

The spelling of 2131251357 in words is "two billion, one hundred thirty-one million, two hundred fifty-one thousand, three hundred fifty-seven".