123433401131 has 4 divisors (see below), whose sum is σ = 123467568432. Its totient is φ = 123399233832.

The previous prime is 123433401107. The next prime is 123433401137. The reversal of 123433401131 is 131104334321.

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 123433401131 - 2¹⁴ = 123433384747 is a prime.

It is a super-2 number, since 2×123433401131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123433401131.

It is not an unprimeable number, because it can be changed into a prime (123433401137) 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, 17078231 + ... + 17085456.

It is an arithmetic number, because the mean of its divisors is an integer number (30866892108).

Almost surely, 2^123433401131 is an apocalyptic number.

123433401131 is a deficient number, since it is larger than the sum of its proper divisors (34167301).

123433401131 is an equidigital number, since it uses as much as digits as its factorization.

123433401131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34167300.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 123433401131 its reverse (131104334321), we get a palindrome (254537735452).

The spelling of 123433401131 in words is "one hundred twenty-three billion, four hundred thirty-three million, four hundred one thousand, one hundred thirty-one".