461509231 has 6 divisors (see below), whose sum is σ = 467544560. Its totient is φ = 455478816.

The previous prime is 461509187. The next prime is 461509291. The reversal of 461509231 is 132905164.

It is not a de Polignac number, because 461509231 - 2¹³ = 461501039 is a prime.

It is a super-2 number, since 2×461509231² = 425981540596422722, 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 = 461509193 and 461509202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461509291) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 189735 + ... + 192151.

Almost surely, 2^461509231 is an apocalyptic number.

461509231 is a deficient number, since it is larger than the sum of its proper divisors (6035329).

461509231 is an frugal number, since it uses more digits than its factorization.

461509231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4913 (or 2496 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 461509231 is about 21482.7659066518. The cubic root of 461509231 is about 772.7875748100.

The spelling of 461509231 in words is "four hundred sixty-one million, five hundred nine thousand, two hundred thirty-one".