31401220031330 has 8 divisors (see below), whose sum is σ = 56522196056412. Its totient is φ = 12560488012528.

The previous prime is 31401220031329. The next prime is 31401220031333. The reversal of 31401220031330 is 3313002210413.

It can be written as a sum of positive squares in 2 ways, for example, as 31323979949089 + 77240082241 = 5596783^2 + 277921^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31401220031296 and 31401220031305.

It is not an unprimeable number, because it can be changed into a prime (31401220031333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1570061001557 + ... + 1570061001576.

Almost surely, 2^{31401220031330} is an apocalyptic number.

31401220031330 is a deficient number, since it is larger than the sum of its proper divisors (25120976025082).

31401220031330 is a wasteful number, since it uses less digits than its factorization.

31401220031330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3140122003140.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31401220031330 its reverse (3313002210413), we get a palindrome (34714222241743).

The spelling of 31401220031330 in words is "thirty-one trillion, four hundred one billion, two hundred twenty million, thirty-one thousand, three hundred thirty".