20131022232 has 32 divisors (see below), whose sum is σ = 55919506800. Its totient is φ = 6710340672.

The previous prime is 20131022231. The next prime is 20131022269. The reversal of 20131022232 is 23222013102.

It is a super-2 number, since 2×20131022232² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131022231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46599373 + ... + 46599804.

Almost surely, 2^20131022232 is an apocalyptic number.

It is an amenable number.

20131022232 is an abundant number, since it is smaller than the sum of its proper divisors (35788484568).

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

20131022232 is a wasteful number, since it uses less digits than its factorization.

20131022232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93199192 (or 93199182 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20131022232 its reverse (23222013102), we get a palindrome (43353035334).

The spelling of 20131022232 in words is "twenty billion, one hundred thirty-one million, twenty-two thousand, two hundred thirty-two".