2231532312 has 32 divisors (see below), whose sum is σ = 5821390080. Its totient is φ = 711502880.

The previous prime is 2231532307. The next prime is 2231532337. The reversal of 2231532312 is 2132351322.

It is a happy number.

It is a super-3 number, since 3×2231532312³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 2020764 + ... + 2021867.

It is an arithmetic number, because the mean of its divisors is an integer number (181918440).

Almost surely, 2^2231532312 is an apocalyptic number.

It is an amenable number.

2231532312 is an abundant number, since it is smaller than the sum of its proper divisors (3589857768).

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

2231532312 is a wasteful number, since it uses less digits than its factorization.

2231532312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4042663 (or 4042659 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 2231532312 is about 47239.0972818067. The cubic root of 2231532312 is about 1306.7757297670.

Adding to 2231532312 its reverse (2132351322), we get a palindrome (4363883634).

The spelling of 2231532312 in words is "two billion, two hundred thirty-one million, five hundred thirty-two thousand, three hundred twelve".