31012131103 has 8 divisors (see below), whose sum is σ = 31324534560. Its totient is φ = 30699832800.

The previous prime is 31012131071. The next prime is 31012131131. The reversal of 31012131103 is 30113121013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31012131103 - 2⁵ = 31012131071 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 (31012131193) 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, 654726 + ... + 700492.

It is an arithmetic number, because the mean of its divisors is an integer number (3915566820).

Almost surely, 2^31012131103 is an apocalyptic number.

31012131103 is a deficient number, since it is larger than the sum of its proper divisors (312403457).

31012131103 is a wasteful number, since it uses less digits than its factorization.

31012131103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52577.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 31012131103 its reverse (30113121013), we get a palindrome (61125252116).

The spelling of 31012131103 in words is "thirty-one billion, twelve million, one hundred thirty-one thousand, one hundred three".