72241131 has 8 divisors (see below), whose sum is σ = 98924944. Its totient is φ = 46859040.

The previous prime is 72241123. The next prime is 72241133. The reversal of 72241131 is 13114227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72241131 - 2³ = 72241123 is a prime.

It is a super-2 number, since 2×72241131² = 10437562016318322, 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 = 72241098 and 72241107.

It is not an unprimeable number, because it can be changed into a prime (72241133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325300 + ... + 325521.

It is an arithmetic number, because the mean of its divisors is an integer number (12365618).

Almost surely, 2^72241131 is an apocalyptic number.

72241131 is a deficient number, since it is larger than the sum of its proper divisors (26683813).

72241131 is a wasteful number, since it uses less digits than its factorization.

72241131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650861.

The product of its digits is 336, while the sum is 21.

The square root of 72241131 is about 8499.4782781063. The cubic root of 72241131 is about 416.4806662794.

Adding to 72241131 its reverse (13114227), we get a palindrome (85355358).

The spelling of 72241131 in words is "seventy-two million, two hundred forty-one thousand, one hundred thirty-one".