240203312131 has 2 divisors, whose sum is σ = 240203312132. Its totient is φ = 240203312130.

The previous prime is 240203312123. The next prime is 240203312179. The reversal of 240203312131 is 131213302042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240203312131 - 2³ = 240203312123 is a prime.

It is a super-2 number, since 2×240203312131² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (240203312231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120101656065 + 120101656066.

It is an arithmetic number, because the mean of its divisors is an integer number (120101656066).

Almost surely, 2^240203312131 is an apocalyptic number.

240203312131 is a deficient number, since it is larger than the sum of its proper divisors (1).

240203312131 is an equidigital number, since it uses as much as digits as its factorization.

240203312131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 240203312131 its reverse (131213302042), we get a palindrome (371416614173).

The spelling of 240203312131 in words is "two hundred forty billion, two hundred three million, three hundred twelve thousand, one hundred thirty-one".