31274577880 has 128 divisors (see below), whose sum is σ = 89593257600. Its totient is φ = 9556549632.

The previous prime is 31274577877. The next prime is 31274577883. The reversal of 31274577880 is 8877547213.

It is an interprime number because it is at equal distance from previous prime (31274577877) and next prime (31274577883).

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31274577883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42577 + ... + 253696.

It is an arithmetic number, because the mean of its divisors is an integer number (699947325).

Almost surely, 2^31274577880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31274577880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44796628800).

31274577880 is an abundant number, since it is smaller than the sum of its proper divisors (58318679720).

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

31274577880 is a wasteful number, since it uses less digits than its factorization.

31274577880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296333 (or 296329 counting only the distinct ones).

The product of its (nonzero) digits is 2634240, while the sum is 52.

It can be divided in two parts, 312745 and 77880, that added together give a 8-th power (390625 = 5⁸).

The spelling of 31274577880 in words is "thirty-one billion, two hundred seventy-four million, five hundred seventy-seven thousand, eight hundred eighty".