1231423501430 has 64 divisors (see below), whose sum is σ = 2275304878080. Its totient is φ = 479677008384.

The previous prime is 1231423501417. The next prime is 1231423501447. The reversal of 1231423501430 is 341053241321.

It is a junction number, because it is equal to n+sod(n) for n = 1231423501393 and 1231423501402.

It is a congruent number.

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, 164471147 + ... + 164478633.

It is an arithmetic number, because the mean of its divisors is an integer number (35551638720).

Almost surely, 2^{1231423501430} is an apocalyptic number.

1231423501430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231423501430 is a deficient number, since it is larger than the sum of its proper divisors (1043881376650).

1231423501430 is a wasteful number, since it uses less digits than its factorization.

1231423501430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10133.

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

Adding to 1231423501430 its reverse (341053241321), we get a palindrome (1572476742751).

The spelling of 1231423501430 in words is "one trillion, two hundred thirty-one billion, four hundred twenty-three million, five hundred one thousand, four hundred thirty".