31013112101 has 4 divisors (see below), whose sum is σ = 32013535104. Its totient is φ = 30012689100.

The previous prime is 31013112077. The next prime is 31013112113. The reversal of 31013112101 is 10121131013.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10121131013 = 7 ⋅1445875859.

It is a cyclic number.

It is not a de Polignac number, because 31013112101 - 2¹⁴ = 31013095717 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 (31013112191) 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, 500211455 + ... + 500211516.

It is an arithmetic number, because the mean of its divisors is an integer number (8003383776).

Almost surely, 2^31013112101 is an apocalyptic number.

31013112101 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31013112101 is a deficient number, since it is larger than the sum of its proper divisors (1000423003).

31013112101 is a wasteful number, since it uses less digits than its factorization.

31013112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000423002.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 31013112101 its reverse (10121131013), we get a palindrome (41134243114).

The spelling of 31013112101 in words is "thirty-one billion, thirteen million, one hundred twelve thousand, one hundred one".