2131031402 has 8 divisors (see below), whose sum is σ = 3198089412. Its totient is φ = 1065001600.

The previous prime is 2131031387. The next prime is 2131031411. The reversal of 2131031402 is 2041301312.

It can be written as a sum of positive squares in 2 ways, for example, as 2041142041 + 89889361 = 45179^2 + 9481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251849 + ... + 260172.

Almost surely, 2^2131031402 is an apocalyptic number.

2131031402 is a deficient number, since it is larger than the sum of its proper divisors (1067058010).

2131031402 is a wasteful number, since it uses less digits than its factorization.

2131031402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514104.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2131031402 is about 46163.0956717593. The cubic root of 2131031402 is about 1286.8559940317.

Adding to 2131031402 its reverse (2041301312), we get a palindrome (4172332714).

The spelling of 2131031402 in words is "two billion, one hundred thirty-one million, thirty-one thousand, four hundred two".