2231434391 has 4 divisors (see below), whose sum is σ = 2251181712. Its totient is φ = 2211687072.

The previous prime is 2231434327. The next prime is 2231434393. The reversal of 2231434391 is 1934341322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2231434391 - 2⁶ = 2231434327 is a prime.

It is a super-3 number, since 3×2231434391³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231434393) 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, 9873491 + ... + 9873716.

It is an arithmetic number, because the mean of its divisors is an integer number (562795428).

Almost surely, 2^2231434391 is an apocalyptic number.

2231434391 is a deficient number, since it is larger than the sum of its proper divisors (19747321).

2231434391 is a wasteful number, since it uses less digits than its factorization.

2231434391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19747320.

The product of its digits is 15552, while the sum is 32.

The square root of 2231434391 is about 47238.0608302246. The cubic root of 2231434391 is about 1306.7566154485.

The spelling of 2231434391 in words is "two billion, two hundred thirty-one million, four hundred thirty-four thousand, three hundred ninety-one".