231050531 has 2 divisors, whose sum is σ = 231050532. Its totient is φ = 231050530.

The previous prime is 231050509. The next prime is 231050537. The reversal of 231050531 is 135050132.

231050531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231050531 is a prime.

It is a super-2 number, since 2×231050531² = 106768695750763922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231050537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115525265 + 115525266.

It is an arithmetic number, because the mean of its divisors is an integer number (115525266).

Almost surely, 2^231050531 is an apocalyptic number.

231050531 is a deficient number, since it is larger than the sum of its proper divisors (1).

231050531 is an equidigital number, since it uses as much as digits as its factorization.

231050531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 231050531 is about 15200.3464105263. The cubic root of 231050531 is about 613.6239806362.

The spelling of 231050531 in words is "two hundred thirty-one million, fifty thousand, five hundred thirty-one".