31155405023 has 2 divisors, whose sum is σ = 31155405024. Its totient is φ = 31155405022.

The previous prime is 31155405013. The next prime is 31155405031. The reversal of 31155405023 is 32050455113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31155405023 - 2¹⁰ = 31155403999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31155405013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15577702511 + 15577702512.

It is an arithmetic number, because the mean of its divisors is an integer number (15577702512).

Almost surely, 2^31155405023 is an apocalyptic number.

31155405023 is a deficient number, since it is larger than the sum of its proper divisors (1).

31155405023 is an equidigital number, since it uses as much as digits as its factorization.

31155405023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 29.

The spelling of 31155405023 in words is "thirty-one billion, one hundred fifty-five million, four hundred five thousand, twenty-three".