203212211223131 has 32 divisors (see below), whose sum is σ = 231267465031680. Its totient is φ = 176881569638400.

The previous prime is 203212211223103. The next prime is 203212211223173. The reversal of 203212211223131 is 131322112212302.

It is not a de Polignac number, because 203212211223131 - 2⁶ = 203212211223067 is a prime.

It is a super-2 number, since 2×203212211223131² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 203212211223131.

It is not an unprimeable number, because it can be changed into a prime (203212211223191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106788650 + ... + 108674928.

It is an arithmetic number, because the mean of its divisors is an integer number (7227108282240).

Almost surely, 2^{203212211223131} is an apocalyptic number.

203212211223131 is a deficient number, since it is larger than the sum of its proper divisors (28055253808549).

203212211223131 is a wasteful number, since it uses less digits than its factorization.

203212211223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889675.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 203212211223131 its reverse (131322112212302), we get a palindrome (334534323435433).

The spelling of 203212211223131 in words is "two hundred three trillion, two hundred twelve billion, two hundred eleven million, two hundred twenty-three thousand, one hundred thirty-one".