131232231402 has 16 divisors (see below), whose sum is σ = 265012662720. Its totient is φ = 43319377152.

The previous prime is 131232231367. The next prime is 131232231421. The reversal of 131232231402 is 204132232131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106174327 + ... + 106175562.

It is an arithmetic number, because the mean of its divisors is an integer number (16563291420).

Almost surely, 2^131232231402 is an apocalyptic number.

131232231402 is an abundant number, since it is smaller than the sum of its proper divisors (133780431318).

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

131232231402 is a wasteful number, since it uses less digits than its factorization.

131232231402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212349997.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 131232231402 its reverse (204132232131), we get a palindrome (335364463533).

The spelling of 131232231402 in words is "one hundred thirty-one billion, two hundred thirty-two million, two hundred thirty-one thousand, four hundred two".