73261731 has 16 divisors (see below), whose sum is σ = 98784000. Its totient is φ = 48294048.

The previous prime is 73261729. The next prime is 73261759. The reversal of 73261731 is 13716237.

It is not a de Polignac number, because 73261731 - 2¹ = 73261729 is a prime.

It is a super-2 number, since 2×73261731² = 10734562458232722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73261781) 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, 174640 + ... + 175058.

It is an arithmetic number, because the mean of its divisors is an integer number (6174000).

Almost surely, 2^73261731 is an apocalyptic number.

73261731 is a deficient number, since it is larger than the sum of its proper divisors (25522269).

73261731 is a wasteful number, since it uses less digits than its factorization.

73261731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938.

The product of its digits is 5292, while the sum is 30.

The square root of 73261731 is about 8559.3066892126. The cubic root of 73261731 is about 418.4328045373.

Adding to 73261731 its reverse (13716237), we get a palindrome (86977968).

The spelling of 73261731 in words is "seventy-three million, two hundred sixty-one thousand, seven hundred thirty-one".