31734634740 has 96 divisors (see below), whose sum is σ = 94319697024. Its totient is φ = 7944806400.

The previous prime is 31734634699. The next prime is 31734634781. The reversal of 31734634740 is 4743643713.

It is an interprime number because it is at equal distance from previous prime (31734634699) and next prime (31734634781).

It is a junction number, because it is equal to n+sod(n) for n = 31734634692 and 31734634701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 370227 + ... + 447813.

It is an arithmetic number, because the mean of its divisors is an integer number (982496844).

Almost surely, 2^31734634740 is an apocalyptic number.

31734634740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31734634740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47159848512).

31734634740 is an abundant number, since it is smaller than the sum of its proper divisors (62585062284).

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

31734634740 is a wasteful number, since it uses less digits than its factorization.

31734634740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78017 (or 78015 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 42.

The spelling of 31734634740 in words is "thirty-one billion, seven hundred thirty-four million, six hundred thirty-four thousand, seven hundred forty".