31130230330 has 32 divisors (see below), whose sum is σ = 56176343424. Its totient is φ = 12420593856.

The previous prime is 31130230319. The next prime is 31130230333. The reversal of 31130230330 is 3303203113.

It is a junction number, because it is equal to n+sod(n) for n = 31130230298 and 31130230307.

It is not an unprimeable number, because it can be changed into a prime (31130230333) 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, 11688579 + ... + 11691241.

It is an arithmetic number, because the mean of its divisors is an integer number (1755510732).

Almost surely, 2^31130230330 is an apocalyptic number.

31130230330 is a deficient number, since it is larger than the sum of its proper divisors (25046113094).

31130230330 is a wasteful number, since it uses less digits than its factorization.

31130230330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190.

The product of its (nonzero) digits is 486, while the sum is 19.

Adding to 31130230330 its reverse (3303203113), we get a palindrome (34433433443).

The spelling of 31130230330 in words is "thirty-one billion, one hundred thirty million, two hundred thirty thousand, three hundred thirty".