1231460231 has 4 divisors (see below), whose sum is σ = 1233412464. Its totient is φ = 1229508000.

The previous prime is 1231460183. The next prime is 1231460261. The reversal of 1231460231 is 1320641321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231460231 is a prime.

It is a super-2 number, since 2×1231460231² = 3032988601069146722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231460197 and 1231460206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231460261) 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, 975170 + ... + 976431.

It is an arithmetic number, because the mean of its divisors is an integer number (308353116).

Almost surely, 2^1231460231 is an apocalyptic number.

1231460231 is a deficient number, since it is larger than the sum of its proper divisors (1952233).

1231460231 is an equidigital number, since it uses as much as digits as its factorization.

1231460231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952232.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1231460231 is about 35092.1676588951. The cubic root of 1231460231 is about 1071.8650997802.

The spelling of 1231460231 in words is "one billion, two hundred thirty-one million, four hundred sixty thousand, two hundred thirty-one".