31130100105 has 32 divisors (see below), whose sum is σ = 54140897664. Its totient is φ = 15182347776.

The previous prime is 31130100091. The next prime is 31130100119. The reversal of 31130100105 is 50100103113.

It is an interprime number because it is at equal distance from previous prime (31130100091) and next prime (31130100119).

It is not a de Polignac number, because 31130100105 - 2⁷ = 31130099977 is a prime.

It is a super-2 number, since 2×31130100105² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 725124 + ... + 766853.

It is an arithmetic number, because the mean of its divisors is an integer number (1691903052).

Almost surely, 2^31130100105 is an apocalyptic number.

It is an amenable number.

31130100105 is a deficient number, since it is larger than the sum of its proper divisors (23010797559).

31130100105 is a wasteful number, since it uses less digits than its factorization.

31130100105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492105.

The product of its (nonzero) digits is 45, while the sum is 15.

Adding to 31130100105 its reverse (50100103113), we get a palindrome (81230203218).

The spelling of 31130100105 in words is "thirty-one billion, one hundred thirty million, one hundred thousand, one hundred five".