131222031432402 has 32 divisors (see below), whose sum is σ = 262553897721024. Its totient is φ = 43722373856000.

The previous prime is 131222031432383. The next prime is 131222031432409. The reversal of 131222031432402 is 204234130222131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 131222031432402.

It is not an unprimeable number, because it can be changed into a prime (131222031432409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212889118 + ... + 213504614.

It is an arithmetic number, because the mean of its divisors is an integer number (8204809303782).

Almost surely, 2^{131222031432402} is an apocalyptic number.

131222031432402 is an abundant number, since it is smaller than the sum of its proper divisors (131331866288622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131222031432402 is a wasteful number, since it uses less digits than its factorization.

131222031432402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630314.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 131222031432402 its reverse (204234130222131), we get a palindrome (335456161654533).

The spelling of 131222031432402 in words is "one hundred thirty-one trillion, two hundred twenty-two billion, thirty-one million, four hundred thirty-two thousand, four hundred two".