231151433 has 2 divisors, whose sum is σ = 231151434. Its totient is φ = 231151432.

The previous prime is 231151411. The next prime is 231151451. The reversal of 231151433 is 334151132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228372544 + 2778889 = 15112^2 + 1667^2 .

It is a cyclic number.

It is not a de Polignac number, because 231151433 - 2²⁶ = 164042569 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231151399 and 231151408.

It is not a weakly prime, because it can be changed into another prime (231151483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115575716 + 115575717.

It is an arithmetic number, because the mean of its divisors is an integer number (115575717).

Almost surely, 2^231151433 is an apocalyptic number.

It is an amenable number.

231151433 is a deficient number, since it is larger than the sum of its proper divisors (1).

231151433 is an equidigital number, since it uses as much as digits as its factorization.

231151433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 23.

The square root of 231151433 is about 15203.6651173327. The cubic root of 231151433 is about 613.7132928106.

The spelling of 231151433 in words is "two hundred thirty-one million, one hundred fifty-one thousand, four hundred thirty-three".