31113107634 has 64 divisors (see below), whose sum is σ = 75435100416. Its totient is φ = 8351422464.

The previous prime is 31113107633. The next prime is 31113107659. The reversal of 31113107634 is 43670131113.

It is not an unprimeable number, because it can be changed into a prime (31113107633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 358582 + ... + 436814.

It is an arithmetic number, because the mean of its divisors is an integer number (1178673444).

Almost surely, 2^31113107634 is an apocalyptic number.

31113107634 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31113107634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37717550208).

31113107634 is an abundant number, since it is smaller than the sum of its proper divisors (44321992782).

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

31113107634 is a wasteful number, since it uses less digits than its factorization.

31113107634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78819.

The product of its (nonzero) digits is 4536, while the sum is 30.

Adding to 31113107634 its reverse (43670131113), we get a palindrome (74783238747).

The spelling of 31113107634 in words is "thirty-one billion, one hundred thirteen million, one hundred seven thousand, six hundred thirty-four".