31012122047 has 2 divisors, whose sum is σ = 31012122048. Its totient is φ = 31012122046.

The previous prime is 31012121953. The next prime is 31012122067. The reversal of 31012122047 is 74022121013.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31012122047 - 2¹⁸ = 31011859903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31012122067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506061023 + 15506061024.

It is an arithmetic number, because the mean of its divisors is an integer number (15506061024).

Almost surely, 2^31012122047 is an apocalyptic number.

31012122047 is a deficient number, since it is larger than the sum of its proper divisors (1).

31012122047 is an equidigital number, since it uses as much as digits as its factorization.

31012122047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The spelling of 31012122047 in words is "thirty-one billion, twelve million, one hundred twenty-two thousand, forty-seven".