31425251601236 has 24 divisors (see below), whose sum is σ = 55019921057640. Its totient is φ = 15705275185152.

The previous prime is 31425251601221. The next prime is 31425251601281. The reversal of 31425251601236 is 63210615252413.

It can be written as a sum of positive squares in 4 ways, for example, as 839440764100 + 30585810837136 = 916210^2 + 5530444^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31425251601193 and 31425251601202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129629690 + ... + 129871886.

It is an arithmetic number, because the mean of its divisors is an integer number (2292496710735).

Almost surely, 2^{31425251601236} is an apocalyptic number.

It is an amenable number.

31425251601236 is a deficient number, since it is larger than the sum of its proper divisors (23594669456404).

31425251601236 is a wasteful number, since it uses less digits than its factorization.

31425251601236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257243 (or 257241 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

Adding to 31425251601236 its reverse (63210615252413), we get a palindrome (94635866853649).

The spelling of 31425251601236 in words is "thirty-one trillion, four hundred twenty-five billion, two hundred fifty-one million, six hundred one thousand, two hundred thirty-six".