31040403016 has 64 divisors (see below), whose sum is σ = 67235230080. Its totient is φ = 13159480320.

The previous prime is 31040403001. The next prime is 31040403047. The reversal of 31040403016 is 61030404013.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3418915 + ... + 3427981.

It is an arithmetic number, because the mean of its divisors is an integer number (1050550470).

Almost surely, 2^31040403016 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 31040403016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33617615040).

31040403016 is an abundant number, since it is smaller than the sum of its proper divisors (36194827064).

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

31040403016 is a wasteful number, since it uses less digits than its factorization.

31040403016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9734 (or 9730 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31040403016 its reverse (61030404013), we get a palindrome (92070807029).

The spelling of 31040403016 in words is "thirty-one billion, forty million, four hundred three thousand, sixteen".