73261431 has 6 divisors (see below), whose sum is σ = 105822080. Its totient is φ = 48840948.

The previous prime is 73261399. The next prime is 73261471. The reversal of 73261431 is 13416237.

It is not a de Polignac number, because 73261431 - 2⁵ = 73261399 is a prime.

It is a super-2 number, since 2×73261431² = 10734474544335522, 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 = 73261395 and 73261404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73261471) 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, 4070071 + ... + 4070088.

Almost surely, 2^73261431 is an apocalyptic number.

73261431 is a deficient number, since it is larger than the sum of its proper divisors (32560649).

73261431 is a wasteful number, since it uses less digits than its factorization.

73261431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8140165 (or 8140162 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 73261431 is about 8559.2891644108. The cubic root of 73261431 is about 418.4322333887.

Adding to 73261431 its reverse (13416237), we get a palindrome (86677668).

The spelling of 73261431 in words is "seventy-three million, two hundred sixty-one thousand, four hundred thirty-one".