123045431231 has 8 divisors (see below), whose sum is σ = 131277929904. Its totient is φ = 114923436160.

The previous prime is 123045431189. The next prime is 123045431287. The reversal of 123045431231 is 132134540321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123045431231 is a prime.

It is a super-2 number, since 2×123045431231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123045431194 and 123045431203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123045430231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27623600 + ... + 27628053.

It is an arithmetic number, because the mean of its divisors is an integer number (16409741238).

Almost surely, 2^123045431231 is an apocalyptic number.

123045431231 is a deficient number, since it is larger than the sum of its proper divisors (8232498673).

123045431231 is a wasteful number, since it uses less digits than its factorization.

123045431231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55251801.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 123045431231 its reverse (132134540321), we get a palindrome (255179971552).

The spelling of 123045431231 in words is "one hundred twenty-three billion, forty-five million, four hundred thirty-one thousand, two hundred thirty-one".