90863031 has 32 divisors (see below), whose sum is σ = 141696000. Its totient is φ = 50722560.

The previous prime is 90863029. The next prime is 90863033. The reversal of 90863031 is 13036809.

It is an interprime number because it is at equal distance from previous prime (90863029) and next prime (90863033).

It is not a de Polignac number, because 90863031 - 2¹ = 90863029 is a prime.

It is a super-2 number, since 2×90863031² = 16512180805013922, 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 90863031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90863033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 221955 + ... + 222363.

It is an arithmetic number, because the mean of its divisors is an integer number (4428000).

Almost surely, 2^90863031 is an apocalyptic number.

90863031 is a deficient number, since it is larger than the sum of its proper divisors (50832969).

90863031 is a wasteful number, since it uses less digits than its factorization.

90863031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 90863031 is about 9532.2101844221. The cubic root of 90863031 is about 449.5683614146.

The spelling of 90863031 in words is "ninety million, eight hundred sixty-three thousand, thirty-one".