31230801 has 24 divisors (see below), whose sum is σ = 51743744. Its totient is φ = 17781120.

The previous prime is 31230781. The next prime is 31230811. The reversal of 31230801 is 10803213.

It is not a de Polignac number, because 31230801 - 2⁵ = 31230769 is a prime.

It is a super-2 number, since 2×31230801² = 1950725862203202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31230811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20496 + ... + 21966.

Almost surely, 2^31230801 is an apocalyptic number.

It is an amenable number.

31230801 is a deficient number, since it is larger than the sum of its proper divisors (20512943).

31230801 is a wasteful number, since it uses less digits than its factorization.

31230801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821 (or 1818 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 31230801 is about 5588.4524691546. The cubic root of 31230801 is about 314.9157446614.

It can be divided in two parts, 312 and 30801, that added together give a palindrome (31113).

The spelling of 31230801 in words is "thirty-one million, two hundred thirty thousand, eight hundred one".