100311321131 has 6 divisors (see below), whose sum is σ = 116688679740. Its totient is φ = 85981132356.

The previous prime is 100311321109. The next prime is 100311321169. The reversal of 100311321131 is 131123113001.

It is a de Polignac number, because none of the positive numbers 2^k-100311321131 is a prime.

It is a super-2 number, since 2×100311321131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100311321431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1023584861 + ... + 1023584958.

It is an arithmetic number, because the mean of its divisors is an integer number (19448113290).

Almost surely, 2^100311321131 is an apocalyptic number.

100311321131 is a deficient number, since it is larger than the sum of its proper divisors (16377358609).

100311321131 is an equidigital number, since it uses as much as digits as its factorization.

100311321131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047169833 (or 2047169826 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 100311321131 its reverse (131123113001), we get a palindrome (231434434132).

The spelling of 100311321131 in words is "one hundred billion, three hundred eleven million, three hundred twenty-one thousand, one hundred thirty-one".