909011431 has 2 divisors, whose sum is σ = 909011432. Its totient is φ = 909011430.

The previous prime is 909011353. The next prime is 909011461. The reversal of 909011431 is 134110909.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 909011431 - 2⁹ = 909010919 is a prime.

It is a super-2 number, since 2×909011431² = 1652603563377335522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 909011431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (909011461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454505715 + 454505716.

It is an arithmetic number, because the mean of its divisors is an integer number (454505716).

Almost surely, 2^909011431 is an apocalyptic number.

909011431 is a deficient number, since it is larger than the sum of its proper divisors (1).

909011431 is an equidigital number, since it uses as much as digits as its factorization.

909011431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 909011431 is about 30149.8164339354. The cubic root of 909011431 is about 968.7010746516.

The spelling of 909011431 in words is "nine hundred nine million, eleven thousand, four hundred thirty-one".