31012301056 has 72 divisors (see below), whose sum is σ = 67875058944. Its totient is φ = 14024693760.

The previous prime is 31012300961. The next prime is 31012301081. The reversal of 31012301056 is 65010321013.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 526801 + ... + 582703.

It is an arithmetic number, because the mean of its divisors is an integer number (942709152).

Almost surely, 2^31012301056 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 31012301056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33937529472).

31012301056 is an abundant number, since it is smaller than the sum of its proper divisors (36862757888).

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

31012301056 is a wasteful number, since it uses less digits than its factorization.

31012301056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56127 (or 56113 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 31012301056 its reverse (65010321013), we get a palindrome (96022622069).

The spelling of 31012301056 in words is "thirty-one billion, twelve million, three hundred one thousand, fifty-six".