203131213242 has 32 divisors (see below), whose sum is σ = 419940072960. Its totient is φ = 65436759360.

The previous prime is 203131213237. The next prime is 203131213261. The reversal of 203131213242 is 242312131302.

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, 608617 + ... + 881292.

It is an arithmetic number, because the mean of its divisors is an integer number (13123127280).

Almost surely, 2^203131213242 is an apocalyptic number.

203131213242 is an abundant number, since it is smaller than the sum of its proper divisors (216808859718).

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

203131213242 is a wasteful number, since it uses less digits than its factorization.

203131213242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490678.

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

Adding to 203131213242 its reverse (242312131302), we get a palindrome (445443344544).

The spelling of 203131213242 in words is "two hundred three billion, one hundred thirty-one million, two hundred thirteen thousand, two hundred forty-two".