2231232302129 has 4 divisors (see below), whose sum is σ = 2308171347060. Its totient is φ = 2154293257200.

The previous prime is 2231232302077. The next prime is 2231232302141. The reversal of 2231232302129 is 9212032321322.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1790840797729 + 440391504400 = 1338223^2 + 663620^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231232302129 - 2²⁴ = 2231215524913 is a prime.

It is a super-3 number, since 3×2231232302129³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2231232302095 and 2231232302104.

It is not an unprimeable number, because it can be changed into a prime (2231232302149) 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, 38469522422 + ... + 38469522479.

It is an arithmetic number, because the mean of its divisors is an integer number (577042836765).

Almost surely, 2^{2231232302129} is an apocalyptic number.

2231232302129 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2231232302129 is a deficient number, since it is larger than the sum of its proper divisors (76939044931).

2231232302129 is an equidigital number, since it uses as much as digits as its factorization.

2231232302129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76939044930.

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

It can be divided in two parts, 223123 and 2302129, that added together give a palindrome (2525252).

The spelling of 2231232302129 in words is "two trillion, two hundred thirty-one billion, two hundred thirty-two million, three hundred two thousand, one hundred twenty-nine".