72411431 has 2 divisors, whose sum is σ = 72411432. Its totient is φ = 72411430.

The previous prime is 72411397. The next prime is 72411439. The reversal of 72411431 is 13411427.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72411431 is a prime.

It is a super-2 number, since 2×72411431² = 10486830678935522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72411397 and 72411406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72411439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36205715 + 36205716.

It is an arithmetic number, because the mean of its divisors is an integer number (36205716).

Almost surely, 2^72411431 is an apocalyptic number.

72411431 is a deficient number, since it is larger than the sum of its proper divisors (1).

72411431 is an equidigital number, since it uses as much as digits as its factorization.

72411431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 23.

The square root of 72411431 is about 8509.4906428058. The cubic root of 72411431 is about 416.8076775706.

Adding to 72411431 its reverse (13411427), we get a palindrome (85822858).

The spelling of 72411431 in words is "seventy-two million, four hundred eleven thousand, four hundred thirty-one".