31113012101 has 4 divisors (see below), whose sum is σ = 31116890400. Its totient is φ = 31109133804.

The previous prime is 31113012097. The next prime is 31113012109. The reversal of 31113012101 is 10121031113.

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.

It is a cyclic number.

It is not a de Polignac number, because 31113012101 - 2² = 31113012097 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 (31113012109) 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, 1927091 + ... + 1943168.

It is an arithmetic number, because the mean of its divisors is an integer number (7779222600).

Almost surely, 2^31113012101 is an apocalyptic number.

It is an amenable number.

31113012101 is a deficient number, since it is larger than the sum of its proper divisors (3878299).

31113012101 is an equidigital number, since it uses as much as digits as its factorization.

31113012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878298.

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

Adding to 31113012101 its reverse (10121031113), we get a palindrome (41234043214).

The spelling of 31113012101 in words is "thirty-one billion, one hundred thirteen million, twelve thousand, one hundred one".