64197031 has 2 divisors, whose sum is σ = 64197032. Its totient is φ = 64197030.

The previous prime is 64196989. The next prime is 64197043. The reversal of 64197031 is 13079146.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64197031 is a prime.

It is a super-2 number, since 2×64197031² = 8242517578429922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64196984 and 64197002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64197131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32098515 + 32098516.

It is an arithmetic number, because the mean of its divisors is an integer number (32098516).

Almost surely, 2^64197031 is an apocalyptic number.

64197031 is a deficient number, since it is larger than the sum of its proper divisors (1).

64197031 is an equidigital number, since it uses as much as digits as its factorization.

64197031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 64197031 is about 8012.3049742256. The cubic root of 64197031 is about 400.4100607318.

The spelling of 64197031 in words is "sixty-four million, one hundred ninety-seven thousand, thirty-one".