31101307613 has 16 divisors (see below), whose sum is σ = 33314760000. Its totient is φ = 28946161152.

The previous prime is 31101307609. The next prime is 31101307663. The reversal of 31101307613 is 31670310113.

It is a cyclic number.

It is not a de Polignac number, because 31101307613 - 2² = 31101307609 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 (31101307663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1894163 + ... + 1910511.

It is an arithmetic number, because the mean of its divisors is an integer number (2082172500).

Almost surely, 2^31101307613 is an apocalyptic number.

It is an amenable number.

31101307613 is a deficient number, since it is larger than the sum of its proper divisors (2213452387).

31101307613 is a wasteful number, since it uses less digits than its factorization.

31101307613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18124.

The product of its (nonzero) digits is 1134, while the sum is 26.

Adding to 31101307613 its reverse (31670310113), we get a palindrome (62771617726).

The spelling of 31101307613 in words is "thirty-one billion, one hundred one million, three hundred seven thousand, six hundred thirteen".