31530344420346 has 128 divisors (see below), whose sum is σ = 67216104806400. Its totient is φ = 9844805187840.

The previous prime is 31530344420297. The next prime is 31530344420359. The reversal of 31530344420346 is 64302444303513.

It is a junction number, because it is equal to n+sod(n) for n = 31530344420298 and 31530344420307.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 288840936 + ... + 288950076.

It is an arithmetic number, because the mean of its divisors is an integer number (525125818800).

Almost surely, 2^{31530344420346} is an apocalyptic number.

31530344420346 is an abundant number, since it is smaller than the sum of its proper divisors (35685760386054).

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

31530344420346 is a wasteful number, since it uses less digits than its factorization.

31530344420346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109604.

The product of its (nonzero) digits is 1244160, while the sum is 42.

Adding to 31530344420346 its reverse (64302444303513), we get a palindrome (95832788723859).

The spelling of 31530344420346 in words is "thirty-one trillion, five hundred thirty billion, three hundred forty-four million, four hundred twenty thousand, three hundred forty-six".