31552056 has 24 divisors (see below), whose sum is σ = 85453680. Its totient is φ = 10517328.

The previous prime is 31552049. The next prime is 31552057. The reversal of 31552056 is 65025513.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31552057) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 219040 + ... + 219183.

It is an arithmetic number, because the mean of its divisors is an integer number (3560570).

Almost surely, 2^31552056 is an apocalyptic number.

31552056 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31552056 is an abundant number, since it is smaller than the sum of its proper divisors (53901624).

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

31552056 is a wasteful number, since it uses less digits than its factorization.

31552056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438235 (or 438228 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 31552056 is about 5617.1216828550. The cubic root of 31552056 is about 315.9918547278.

Adding to 31552056 its reverse (65025513), we get a palindrome (96577569).

The spelling of 31552056 in words is "thirty-one million, five hundred fifty-two thousand, fifty-six".