31423325353402 has 32 divisors (see below), whose sum is σ = 47975828241744. Its totient is φ = 15433954560000.

The previous prime is 31423325353349. The next prime is 31423325353403. The reversal of 31423325353402 is 20435352332413.

It can be written as a sum of positive squares in 8 ways, for example, as 19158908113921 + 12264417239481 = 4377089^2 + 3502059^2 .

It is not an unprimeable number, because it can be changed into a prime (31423325353403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49525638 + ... + 50156110.

Almost surely, 2^{31423325353402} is an apocalyptic number.

31423325353402 is a deficient number, since it is larger than the sum of its proper divisors (16552502888342).

31423325353402 is a wasteful number, since it uses less digits than its factorization.

31423325353402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632514.

The product of its (nonzero) digits is 777600, while the sum is 40.

Adding to 31423325353402 its reverse (20435352332413), we get a palindrome (51858677685815).

The spelling of 31423325353402 in words is "thirty-one trillion, four hundred twenty-three billion, three hundred twenty-five million, three hundred fifty-three thousand, four hundred two".