1963457231 has 4 divisors (see below), whose sum is σ = 1988311200. Its totient is φ = 1938603264.

The previous prime is 1963457227. The next prime is 1963457233. The reversal of 1963457231 is 1327543691.

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

It is a cyclic number.

It is not a de Polignac number, because 1963457231 - 2² = 1963457227 is a prime.

It is a super-2 number, since 2×1963457231² = 7710328595932374722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1963457233) 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, 12426866 + ... + 12427023.

It is an arithmetic number, because the mean of its divisors is an integer number (497077800).

Almost surely, 2^1963457231 is an apocalyptic number.

1963457231 is a deficient number, since it is larger than the sum of its proper divisors (24853969).

1963457231 is an equidigital number, since it uses as much as digits as its factorization.

1963457231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24853968.

The product of its digits is 136080, while the sum is 41.

The square root of 1963457231 is about 44310.9154836593. The cubic root of 1963457231 is about 1252.2003338322.

The spelling of 1963457231 in words is "one billion, nine hundred sixty-three million, four hundred fifty-seven thousand, two hundred thirty-one".