20131100124 has 24 divisors (see below), whose sum is σ = 46974981648. Its totient is φ = 6710021760.

The previous prime is 20131100111. The next prime is 20131100147. The reversal of 20131100124 is 42100113102.

It is a super-2 number, since 2×20131100124² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327394 + ... + 383990.

It is an arithmetic number, because the mean of its divisors is an integer number (1957290902).

Almost surely, 2^20131100124 is an apocalyptic number.

It is an amenable number.

20131100124 is an abundant number, since it is smaller than the sum of its proper divisors (26843881524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20131100124 is a wasteful number, since it uses less digits than its factorization.

20131100124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86245 (or 86243 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20131100124 its reverse (42100113102), we get a palindrome (62231213226).

The spelling of 20131100124 in words is "twenty billion, one hundred thirty-one million, one hundred thousand, one hundred twenty-four".