203426623531 has 2 divisors, whose sum is σ = 203426623532. Its totient is φ = 203426623530.

The previous prime is 203426623501. The next prime is 203426623627. The reversal of 203426623531 is 135326624302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203426623531 - 2²⁹ = 202889752619 is a prime.

It is a super-2 number, since 2×203426623531² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (203426623501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101713311765 + 101713311766.

It is an arithmetic number, because the mean of its divisors is an integer number (101713311766).

Almost surely, 2^203426623531 is an apocalyptic number.

203426623531 is a deficient number, since it is larger than the sum of its proper divisors (1).

203426623531 is an equidigital number, since it uses as much as digits as its factorization.

203426623531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 37.

The spelling of 203426623531 in words is "two hundred three billion, four hundred twenty-six million, six hundred twenty-three thousand, five hundred thirty-one".