31642734474 has 96 divisors (see below), whose sum is σ = 78249946320. Its totient is φ = 9154861056.

The previous prime is 31642734469. The next prime is 31642734479. The reversal of 31642734474 is 47443724613.

It is an interprime number because it is at equal distance from previous prime (31642734469) and next prime (31642734479).

It can be written as a sum of positive squares in 8 ways, for example, as 16927831449 + 14714903025 = 130107^2 + 121305^2 .

It is not an unprimeable number, because it can be changed into a prime (31642734479) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5076792 + ... + 5083020.

Almost surely, 2^31642734474 is an apocalyptic number.

31642734474 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 31642734474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39124973160).

31642734474 is an abundant number, since it is smaller than the sum of its proper divisors (46607211846).

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

31642734474 is a wasteful number, since it uses less digits than its factorization.

31642734474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7544 (or 7541 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 45.

The spelling of 31642734474 in words is "thirty-one billion, six hundred forty-two million, seven hundred thirty-four thousand, four hundred seventy-four".