2231432131 has 4 divisors (see below), whose sum is σ = 2251179432. Its totient is φ = 2211684832.

The previous prime is 2231432117. The next prime is 2231432141. The reversal of 2231432131 is 1312341322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1312341322 = 2 ⋅656170661.

It is a cyclic number.

It is not a de Polignac number, because 2231432131 - 2⁷ = 2231432003 is a prime.

It is a super-3 number, since 3×2231432131³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2231432141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9873481 + ... + 9873706.

It is an arithmetic number, because the mean of its divisors is an integer number (562794858).

Almost surely, 2^2231432131 is an apocalyptic number.

2231432131 is a deficient number, since it is larger than the sum of its proper divisors (19747301).

2231432131 is a wasteful number, since it uses less digits than its factorization.

2231432131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19747300.

The product of its digits is 864, while the sum is 22.

The square root of 2231432131 is about 47238.0369088302. The cubic root of 2231432131 is about 1306.7561742867.

Adding to 2231432131 its reverse (1312341322), we get a palindrome (3543773453).

It can be divided in two parts, 22314 and 32131, that added together give a palindrome (54445).

The spelling of 2231432131 in words is "two billion, two hundred thirty-one million, four hundred thirty-two thousand, one hundred thirty-one".