9100090431 has 6 divisors (see below), whose sum is σ = 13144575080. Its totient is φ = 6066726948.

The previous prime is 9100090421. The next prime is 9100090477. The reversal of 9100090431 is 1340900019.

It is not a de Polignac number, because 9100090431 - 2¹¹ = 9100088383 is a prime.

It is a super-2 number, since 2×9100090431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9100090395 and 9100090404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9100090411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 505560571 + ... + 505560588.

Almost surely, 2^9100090431 is an apocalyptic number.

9100090431 is a deficient number, since it is larger than the sum of its proper divisors (4044484649).

9100090431 is a wasteful number, since it uses less digits than its factorization.

9100090431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011121165 (or 1011121162 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 9100090431 is about 95394.3941277474. The cubic root of 9100090431 is about 2087.7663943247.

The spelling of 9100090431 in words is "nine billion, one hundred million, ninety thousand, four hundred thirty-one".