231451963 has 2 divisors, whose sum is σ = 231451964. Its totient is φ = 231451962.

The previous prime is 231451933. The next prime is 231452009. The reversal of 231451963 is 369154132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231451963 - 2⁵ = 231451931 is a prime.

It is a super-2 number, since 2×231451963² = 107140022353106738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231451933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115725981 + 115725982.

It is an arithmetic number, because the mean of its divisors is an integer number (115725982).

Almost surely, 2^231451963 is an apocalyptic number.

231451963 is a deficient number, since it is larger than the sum of its proper divisors (1).

231451963 is an equidigital number, since it uses as much as digits as its factorization.

231451963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 34.

The square root of 231451963 is about 15213.5453790364. The cubic root of 231451963 is about 613.9791493802.

The spelling of 231451963 in words is "two hundred thirty-one million, four hundred fifty-one thousand, nine hundred sixty-three".