31348071225 has 30 divisors (see below), whose sum is σ = 58067468030. Its totient is φ = 16718970240.

The previous prime is 31348071221. The next prime is 31348071239. The reversal of 31348071225 is 52217084313.

It can be written as a sum of positive squares in 3 ways, for example, as 509901561 + 30838169664 = 22581^2 + 175608^2 .

It is not a de Polignac number, because 31348071225 - 2² = 31348071221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31348071225.

It is not an unprimeable number, because it can be changed into a prime (31348071221) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 7738240 + ... + 7742289.

Almost surely, 2^31348071225 is an apocalyptic number.

It is an amenable number.

31348071225 is a deficient number, since it is larger than the sum of its proper divisors (26719396805).

31348071225 is a wasteful number, since it uses less digits than its factorization.

31348071225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15480551 (or 15480537 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 31348071225 in words is "thirty-one billion, three hundred forty-eight million, seventy-one thousand, two hundred twenty-five".