20103131862 has 48 divisors (see below), whose sum is σ = 47537238528. Its totient is φ = 6089198640.

The previous prime is 20103131833. The next prime is 20103131911. The reversal of 20103131862 is 26813130102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 458803 + ... + 500705.

It is an arithmetic number, because the mean of its divisors is an integer number (990359136).

Almost surely, 2^20103131862 is an apocalyptic number.

20103131862 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20103131862 is an abundant number, since it is smaller than the sum of its proper divisors (27434106666).

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

20103131862 is a wasteful number, since it uses less digits than its factorization.

20103131862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44345 (or 44342 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 20103131862 its reverse (26813130102), we get a palindrome (46916261964).

The spelling of 20103131862 in words is "twenty billion, one hundred three million, one hundred thirty-one thousand, eight hundred sixty-two".