31144120330 has 16 divisors (see below), whose sum is σ = 56061425664. Its totient is φ = 12457201680.

The previous prime is 31144120291. The next prime is 31144120361. The reversal of 31144120330 is 3302144113.

It is a super-2 number, since 2×31144120330² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529159 + ... + 585061.

It is an arithmetic number, because the mean of its divisors is an integer number (3503839104).

Almost surely, 2^31144120330 is an apocalyptic number.

31144120330 is a deficient number, since it is larger than the sum of its proper divisors (24917305334).

31144120330 is a wasteful number, since it uses less digits than its factorization.

31144120330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111621.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31144120330 its reverse (3302144113), we get a palindrome (34446264443).

The spelling of 31144120330 in words is "thirty-one billion, one hundred forty-four million, one hundred twenty thousand, three hundred thirty".