3231865157 has 2 divisors, whose sum is σ = 3231865158. Its totient is φ = 3231865156.

The previous prime is 3231865141. The next prime is 3231865163. The reversal of 3231865157 is 7515681323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3123580321 + 108284836 = 55889^2 + 10406^2 .

It is a cyclic number.

It is not a de Polignac number, because 3231865157 - 2⁴ = 3231865141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3231865177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1615932578 + 1615932579.

It is an arithmetic number, because the mean of its divisors is an integer number (1615932579).

Almost surely, 2^3231865157 is an apocalyptic number.

It is an amenable number.

3231865157 is a deficient number, since it is larger than the sum of its proper divisors (1).

3231865157 is an equidigital number, since it uses as much as digits as its factorization.

3231865157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 41.

The square root of 3231865157 is about 56849.4956617911. The cubic root of 3231865157 is about 1478.4877963300.

The spelling of 3231865157 in words is "three billion, two hundred thirty-one million, eight hundred sixty-five thousand, one hundred fifty-seven".