131210321402 has 32 divisors (see below), whose sum is σ = 205910719488. Its totient is φ = 62659506096.

The previous prime is 131210321387. The next prime is 131210321413. The reversal of 131210321402 is 204123012131.

It is a super-2 number, since 2×131210321402² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 576533 + ... + 771239.

It is an arithmetic number, because the mean of its divisors is an integer number (6434709984).

Almost surely, 2^131210321402 is an apocalyptic number.

131210321402 is a deficient number, since it is larger than the sum of its proper divisors (74700398086).

131210321402 is a wasteful number, since it uses less digits than its factorization.

131210321402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194930.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 131210321402 its reverse (204123012131), we get a palindrome (335333333533).

The spelling of 131210321402 in words is "one hundred thirty-one billion, two hundred ten million, three hundred twenty-one thousand, four hundred two".