131231001202 has 48 divisors (see below), whose sum is σ = 237231063360. Its totient is φ = 54222175392.

The previous prime is 131231001157. The next prime is 131231001211. The reversal of 131231001202 is 202100132131.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1907283 + ... + 1974889.

It is an arithmetic number, because the mean of its divisors is an integer number (4942313820).

Almost surely, 2^131231001202 is an apocalyptic number.

131231001202 is a deficient number, since it is larger than the sum of its proper divisors (106000062158).

131231001202 is a wasteful number, since it uses less digits than its factorization.

131231001202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68335 (or 68328 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 131231001202 its reverse (202100132131), we get a palindrome (333331133333).

The spelling of 131231001202 in words is "one hundred thirty-one billion, two hundred thirty-one million, one thousand, two hundred two".