31431117007 has 8 divisors (see below), whose sum is σ = 31480905456. Its totient is φ = 31381362432.

The previous prime is 31431117001. The next prime is 31431117049. The reversal of 31431117007 is 70071113413.

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-31431117007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31431117001) 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, 2339433 + ... + 2352829.

It is an arithmetic number, because the mean of its divisors is an integer number (3935113182).

Almost surely, 2^31431117007 is an apocalyptic number.

31431117007 is a deficient number, since it is larger than the sum of its proper divisors (49788449).

31431117007 is a wasteful number, since it uses less digits than its factorization.

31431117007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16937.

The product of its (nonzero) digits is 1764, while the sum is 28.

The spelling of 31431117007 in words is "thirty-one billion, four hundred thirty-one million, one hundred seventeen thousand, seven".