131022230402 has 32 divisors (see below), whose sum is σ = 232981491072. Its totient is φ = 54095174784.

The previous prime is 131022230401. The next prime is 131022230413. The reversal of 131022230402 is 204032220131.

It is not an unprimeable number, because it can be changed into a prime (131022230401) 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, 1446773 + ... + 1534664.

It is an arithmetic number, because the mean of its divisors is an integer number (7280671596).

Almost surely, 2^131022230402 is an apocalyptic number.

131022230402 is a deficient number, since it is larger than the sum of its proper divisors (101959260670).

131022230402 is a wasteful number, since it uses less digits than its factorization.

131022230402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2981562.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 131022230402 its reverse (204032220131), we get a palindrome (335054450533).

The spelling of 131022230402 in words is "one hundred thirty-one billion, twenty-two million, two hundred thirty thousand, four hundred two".