481232391 has 16 divisors (see below), whose sum is σ = 660411648. Its totient is φ = 311572800.

The previous prime is 481232387. The next prime is 481232417. The reversal of 481232391 is 193232184.

It is not a de Polignac number, because 481232391 - 2² = 481232387 is a prime.

It is a super-2 number, since 2×481232391² = 463169228295153762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481232491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2590 + ... + 31131.

It is an arithmetic number, because the mean of its divisors is an integer number (41275728).

Almost surely, 2^481232391 is an apocalyptic number.

481232391 is a deficient number, since it is larger than the sum of its proper divisors (179179257).

481232391 is a wasteful number, since it uses less digits than its factorization.

481232391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33862.

The product of its digits is 10368, while the sum is 33.

The square root of 481232391 is about 21937.0096184507. The cubic root of 481232391 is about 783.6430455202.

The spelling of 481232391 in words is "four hundred eighty-one million, two hundred thirty-two thousand, three hundred ninety-one".