31012140215252 has 24 divisors (see below), whose sum is σ = 62024460146880. Its totient is φ = 13290878724480.

The previous prime is 31012140215249. The next prime is 31012140215297. The reversal of 31012140215252 is 25251204121013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9605324 + ... + 12421212.

It is an arithmetic number, because the mean of its divisors is an integer number (2584352506120).

Almost surely, 2^{31012140215252} is an apocalyptic number.

It is an amenable number.

31012140215252 is an abundant number, since it is smaller than the sum of its proper divisors (31012319931628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31012140215252 is a wasteful number, since it uses less digits than its factorization.

31012140215252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3209231 (or 3209229 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 31012140215252 its reverse (25251204121013), we get a palindrome (56263344336265).

The spelling of 31012140215252 in words is "thirty-one trillion, twelve billion, one hundred forty million, two hundred fifteen thousand, two hundred fifty-two".