131020140013402 has 4 divisors (see below), whose sum is σ = 196530210020106. Its totient is φ = 65510070006700.

The previous prime is 131020140013397. The next prime is 131020140013423. The reversal of 131020140013402 is 204310041020131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 78603278490801 + 52416861522601 = 8865849^2 + 7239949^2 .

It is a super-2 number, since 2×131020140013402² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32755035003349 + ... + 32755035003352.

Almost surely, 2^{131020140013402} is an apocalyptic number.

131020140013402 is a deficient number, since it is larger than the sum of its proper divisors (65510070006704).

131020140013402 is an equidigital number, since it uses as much as digits as its factorization.

131020140013402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65510070006703.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 131020140013402 its reverse (204310041020131), we get a palindrome (335330181033533).

The spelling of 131020140013402 in words is "one hundred thirty-one trillion, twenty billion, one hundred forty million, thirteen thousand, four hundred two".