31398840001 has 8 divisors (see below), whose sum is σ = 31982543360. Its totient is φ = 30818521008.

The previous prime is 31398839977. The next prime is 31398840019. The reversal of 31398840001 is 10004889313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31398840001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31398840041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 827361 + ... + 864478.

It is an arithmetic number, because the mean of its divisors is an integer number (3997817920).

Almost surely, 2^31398840001 is an apocalyptic number.

It is an amenable number.

31398840001 is a deficient number, since it is larger than the sum of its proper divisors (583703359).

31398840001 is a wasteful number, since it uses less digits than its factorization.

31398840001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692183.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 31398840001 in words is "thirty-one billion, three hundred ninety-eight million, eight hundred forty thousand, one".