123231430 has 16 divisors (see below), whose sum is σ = 253504800. Its totient is φ = 42250752.

The previous prime is 123231403. The next prime is 123231431. The reversal of 123231430 is 34132321.

It is a junction number, because it is equal to n+sod(n) for n = 123231398 and 123231407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123231431) 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, 880155 + ... + 880294.

It is an arithmetic number, because the mean of its divisors is an integer number (15844050).

Almost surely, 2^123231430 is an apocalyptic number.

123231430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123231430 is an abundant number, since it is smaller than the sum of its proper divisors (130273370).

123231430 is a wasteful number, since it uses less digits than its factorization.

123231430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760463.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 123231430 is about 11100.9652733445. The cubic root of 123231430 is about 497.6306972090.

Adding to 123231430 its reverse (34132321), we get a palindrome (157363751).

The spelling of 123231430 in words is "one hundred twenty-three million, two hundred thirty-one thousand, four hundred thirty".