74270431 has 2 divisors, whose sum is σ = 74270432. Its totient is φ = 74270430.

The previous prime is 74270429. The next prime is 74270491. The reversal of 74270431 is 13407247.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74270431 - 2¹ = 74270429 is a prime.

It is a super-2 number, since 2×74270431² = 11032193841851522, which contains 22 as substring.

Together with 74270429, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 74270431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74270401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37135215 + 37135216.

It is an arithmetic number, because the mean of its divisors is an integer number (37135216).

Almost surely, 2^74270431 is an apocalyptic number.

74270431 is a deficient number, since it is larger than the sum of its proper divisors (1).

74270431 is an equidigital number, since it uses as much as digits as its factorization.

74270431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 74270431 is about 8618.0294151273. The cubic root of 74270431 is about 420.3444472181.

Adding to 74270431 its reverse (13407247), we get a palindrome (87677678).

The spelling of 74270431 in words is "seventy-four million, two hundred seventy thousand, four hundred thirty-one".