31706342540 has 12 divisors (see below), whose sum is σ = 66583319376. Its totient is φ = 12682537008.

The previous prime is 31706342501. The next prime is 31706342543. The reversal of 31706342540 is 4524360713.

It is a self number, because there is not a number n which added to its sum of digits gives 31706342540.

It is not an unprimeable number, because it can be changed into a prime (31706342543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 792658544 + ... + 792658583.

It is an arithmetic number, because the mean of its divisors is an integer number (5548609948).

Almost surely, 2^31706342540 is an apocalyptic number.

It is an amenable number.

31706342540 is an abundant number, since it is smaller than the sum of its proper divisors (34876976836).

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

31706342540 is a wasteful number, since it uses less digits than its factorization.

31706342540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585317136 (or 1585317134 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The spelling of 31706342540 in words is "thirty-one billion, seven hundred six million, three hundred forty-two thousand, five hundred forty".