123431304035 has 32 divisors (see below), whose sum is σ = 162400896000. Its totient is φ = 89511205248.

The previous prime is 123431304001. The next prime is 123431304043. The reversal of 123431304035 is 530403134321.

It is a de Polignac number, because none of the positive numbers 2^k-123431304035 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123431303989 and 123431304007.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 832466 + ... + 969464.

It is an arithmetic number, because the mean of its divisors is an integer number (5075028000).

Almost surely, 2^123431304035 is an apocalyptic number.

123431304035 is a deficient number, since it is larger than the sum of its proper divisors (38969591965).

123431304035 is a wasteful number, since it uses less digits than its factorization.

123431304035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137267.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 123431304035 its reverse (530403134321), we get a palindrome (653834438356).

The spelling of 123431304035 in words is "one hundred twenty-three billion, four hundred thirty-one million, three hundred four thousand, thirty-five".