31074293077 has 2 divisors, whose sum is σ = 31074293078. Its totient is φ = 31074293076.

The previous prime is 31074293057. The next prime is 31074293141. The reversal of 31074293077 is 77039247013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23639370001 + 7434923076 = 153751^2 + 86226^2 .

It is a cyclic number.

It is not a de Polignac number, because 31074293077 - 2²⁷ = 30940075349 is a prime.

It is a super-2 number, since 2×31074293077² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31074293057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15537146538 + 15537146539.

It is an arithmetic number, because the mean of its divisors is an integer number (15537146539).

Almost surely, 2^31074293077 is an apocalyptic number.

It is an amenable number.

31074293077 is a deficient number, since it is larger than the sum of its proper divisors (1).

31074293077 is an equidigital number, since it uses as much as digits as its factorization.

31074293077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 222264, while the sum is 43.

The spelling of 31074293077 in words is "thirty-one billion, seventy-four million, two hundred ninety-three thousand, seventy-seven".