31230000033 has 4 divisors (see below), whose sum is σ = 41640000048. Its totient is φ = 20820000020.

The previous prime is 31230000017. The next prime is 31230000041. The reversal of 31230000033 is 33000003213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33000003213 = 3 ⋅11000001071.

It is a cyclic number.

It is not a de Polignac number, because 31230000033 - 2⁴ = 31230000017 is a prime.

It is a super-2 number, since 2×31230000033² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31229999967 and 31230000021.

It is not an unprimeable number, because it can be changed into a prime (31230000073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5205000003 + ... + 5205000008.

It is an arithmetic number, because the mean of its divisors is an integer number (10410000012).

Almost surely, 2^31230000033 is an apocalyptic number.

It is an amenable number.

31230000033 is a deficient number, since it is larger than the sum of its proper divisors (10410000015).

31230000033 is a wasteful number, since it uses less digits than its factorization.

31230000033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10410000014.

The product of its (nonzero) digits is 162, while the sum is 15.

Adding to 31230000033 its reverse (33000003213), we get a palindrome (64230003246).

The spelling of 31230000033 in words is "thirty-one billion, two hundred thirty million, thirty-three", and thus it is an aban number.