31102303123101 has 16 divisors (see below), whose sum is σ = 47394710950400. Its totient is φ = 17772472677168.

The previous prime is 31102303123079. The next prime is 31102303123103. The reversal of 31102303123101 is 10132130320113.

It is a happy number.

It is not a de Polignac number, because 31102303123101 - 2⁵ = 31102303123069 is a prime.

It is a super-2 number, since 2×31102303123101² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31102303123103) 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, 9922771 + ... + 12675408.

It is an arithmetic number, because the mean of its divisors is an integer number (2962169434400).

Almost surely, 2^{31102303123101} is an apocalyptic number.

It is an amenable number.

31102303123101 is a deficient number, since it is larger than the sum of its proper divisors (16292407827299).

31102303123101 is a wasteful number, since it uses less digits than its factorization.

31102303123101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22663728.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31102303123101 its reverse (10132130320113), we get a palindrome (41234433443214).

The spelling of 31102303123101 in words is "thirty-one trillion, one hundred two billion, three hundred three million, one hundred twenty-three thousand, one hundred one".