20131001022 has 32 divisors (see below), whose sum is σ = 45831847680. Its totient is φ = 5835072320.

The previous prime is 20131001003. The next prime is 20131001039. The reversal of 20131001022 is 22010013102.

It is a junction number, because it is equal to n+sod(n) for n = 20131000989 and 20131001007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6629247 + ... + 6632282.

It is an arithmetic number, because the mean of its divisors is an integer number (1432245240).

Almost surely, 2^20131001022 is an apocalyptic number.

20131001022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20131001022 is an abundant number, since it is smaller than the sum of its proper divisors (25700846658).

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

20131001022 is a wasteful number, since it uses less digits than its factorization.

20131001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13261568.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20131001022 its reverse (22010013102), we get a palindrome (42141014124).

The spelling of 20131001022 in words is "twenty billion, one hundred thirty-one million, one thousand, twenty-two".