30331140231 has 16 divisors (see below), whose sum is σ = 46458362624. Its totient is φ = 17242274304.

The previous prime is 30331140209. The next prime is 30331140233. The reversal of 30331140231 is 13204113303.

It is not a de Polignac number, because 30331140231 - 2¹⁰ = 30331139207 is a prime.

It is a super-2 number, since 2×30331140231² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30331140198 and 30331140207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30331140233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3737761 + ... + 3745866.

It is an arithmetic number, because the mean of its divisors is an integer number (2903647664).

Almost surely, 2^30331140231 is an apocalyptic number.

30331140231 is a deficient number, since it is larger than the sum of its proper divisors (16127222393).

30331140231 is a wasteful number, since it uses less digits than its factorization.

30331140231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7483830.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 30331140231 its reverse (13204113303), we get a palindrome (43535253534).

The spelling of 30331140231 in words is "thirty billion, three hundred thirty-one million, one hundred forty thousand, two hundred thirty-one".