31420343330 has 32 divisors (see below), whose sum is σ = 59892295536. Its totient is φ = 11827093504.

The previous prime is 31420343329. The next prime is 31420343359. The reversal of 31420343330 is 3334302413.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 29356367569 + 2063975761 = 171337^2 + 45431^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31420343330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2209202 + ... + 2223378.

Almost surely, 2^31420343330 is an apocalyptic number.

31420343330 is a deficient number, since it is larger than the sum of its proper divisors (28471952206).

31420343330 is a wasteful number, since it uses less digits than its factorization.

31420343330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27238.

The product of its (nonzero) digits is 7776, while the sum is 26.

Adding to 31420343330 its reverse (3334302413), we get a palindrome (34754645743).

The spelling of 31420343330 in words is "thirty-one billion, four hundred twenty million, three hundred forty-three thousand, three hundred thirty".