20130131024 has 20 divisors (see below), whose sum is σ = 40697874336. Its totient is φ = 9627453792.

The previous prime is 20130131011. The next prime is 20130131027. The reversal of 20130131024 is 42013103102.

It is a junction number, because it is equal to n+sod(n) for n = 20130130993 and 20130131011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130131027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27350354 + ... + 27351089.

Almost surely, 2^20130131024 is an apocalyptic number.

It is an amenable number.

20130131024 is an abundant number, since it is smaller than the sum of its proper divisors (20567743312).

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

20130131024 is a wasteful number, since it uses less digits than its factorization.

20130131024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54701474 (or 54701468 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20130131024 its reverse (42013103102), we get a palindrome (62143234126).

The spelling of 20130131024 in words is "twenty billion, one hundred thirty million, one hundred thirty-one thousand, twenty-four".