31002212149 has 2 divisors, whose sum is σ = 31002212150. Its totient is φ = 31002212148.

The previous prime is 31002212077. The next prime is 31002212159. The reversal of 31002212149 is 94121220013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16678431025 + 14323781124 = 129145^2 + 119682^2 .

It is a cyclic number.

It is not a de Polignac number, because 31002212149 - 2¹¹ = 31002210101 is a prime.

It is a super-2 number, since 2×31002212149² (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 (31002212159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15501106074 + 15501106075.

It is an arithmetic number, because the mean of its divisors is an integer number (15501106075).

Almost surely, 2^31002212149 is an apocalyptic number.

It is an amenable number.

31002212149 is a deficient number, since it is larger than the sum of its proper divisors (1).

31002212149 is an equidigital number, since it uses as much as digits as its factorization.

31002212149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 31002212149 in words is "thirty-one billion, two million, two hundred twelve thousand, one hundred forty-nine".