231481229269 has 4 divisors (see below), whose sum is σ = 231483618720. Its totient is φ = 231478839820.

The previous prime is 231481229257. The next prime is 231481229293. The reversal of 231481229269 is 962922184132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231481229269 - 2²¹ = 231479132117 is a prime.

It is a super-2 number, since 2×231481229269² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231481229209) 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, 1042987 + ... + 1245304.

It is an arithmetic number, because the mean of its divisors is an integer number (57870904680).

Almost surely, 2^231481229269 is an apocalyptic number.

It is an amenable number.

231481229269 is a deficient number, since it is larger than the sum of its proper divisors (2389451).

231481229269 is a wasteful number, since it uses less digits than its factorization.

231481229269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389450.

The product of its digits is 746496, while the sum is 49.

The spelling of 231481229269 in words is "two hundred thirty-one billion, four hundred eighty-one million, two hundred twenty-nine thousand, two hundred sixty-nine".