31349978701 has 16 divisors (see below), whose sum is σ = 33349881600. Its totient is φ = 29386663488.

The previous prime is 31349978683. The next prime is 31349978711. The reversal of 31349978701 is 10787994313.

It is a cyclic number.

It is not a de Polignac number, because 31349978701 - 2⁷ = 31349978573 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 (31349978711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 690951 + ... + 734923.

It is an arithmetic number, because the mean of its divisors is an integer number (2084367600).

Almost surely, 2^31349978701 is an apocalyptic number.

It is an amenable number.

31349978701 is a deficient number, since it is larger than the sum of its proper divisors (1999902899).

31349978701 is a wasteful number, since it uses less digits than its factorization.

31349978701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44388.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The spelling of 31349978701 in words is "thirty-one billion, three hundred forty-nine million, nine hundred seventy-eight thousand, seven hundred one".