31403240330 has 64 divisors (see below), whose sum is σ = 70496593920. Its totient is φ = 9784852800.

The previous prime is 31403240273. The next prime is 31403240377. The reversal of 31403240330 is 3304230413.

It is a junction number, because it is equal to n+sod(n) for n = 31403240296 and 31403240305.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3783485 + ... + 3791775.

It is an arithmetic number, because the mean of its divisors is an integer number (1101509280).

Almost surely, 2^31403240330 is an apocalyptic number.

31403240330 is an abundant number, since it is smaller than the sum of its proper divisors (39093353590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31403240330 is a wasteful number, since it uses less digits than its factorization.

31403240330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13235.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 31403240330 its reverse (3304230413), we get a palindrome (34707470743).

The spelling of 31403240330 in words is "thirty-one billion, four hundred three million, two hundred forty thousand, three hundred thirty".