31375477927 has 2 divisors, whose sum is σ = 31375477928. Its totient is φ = 31375477926.

The previous prime is 31375477849. The next prime is 31375477963. The reversal of 31375477927 is 72977457313.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31375477927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31375471927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15687738963 + 15687738964.

It is an arithmetic number, because the mean of its divisors is an integer number (15687738964).

Almost surely, 2^31375477927 is an apocalyptic number.

31375477927 is a deficient number, since it is larger than the sum of its proper divisors (1).

31375477927 is an equidigital number, since it uses as much as digits as its factorization.

31375477927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7779240, while the sum is 55.

The spelling of 31375477927 in words is "thirty-one billion, three hundred seventy-five million, four hundred seventy-seven thousand, nine hundred twenty-seven".