31418370149 has 2 divisors, whose sum is σ = 31418370150. Its totient is φ = 31418370148.

The previous prime is 31418370119. The next prime is 31418370169. The reversal of 31418370149 is 94107381413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27620113249 + 3798256900 = 166193^2 + 61630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31418370149 is a prime.

It is a super-2 number, since 2×31418370149² (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 (31418370119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15709185074 + 15709185075.

It is an arithmetic number, because the mean of its divisors is an integer number (15709185075).

Almost surely, 2^31418370149 is an apocalyptic number.

It is an amenable number.

31418370149 is a deficient number, since it is larger than the sum of its proper divisors (1).

31418370149 is an equidigital number, since it uses as much as digits as its factorization.

31418370149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 31418370149 in words is "thirty-one billion, four hundred eighteen million, three hundred seventy thousand, one hundred forty-nine".