31323011353 has 4 divisors (see below), whose sum is σ = 31323372388. Its totient is φ = 31322650320.

The previous prime is 31323011341. The next prime is 31323011359. The reversal of 31323011353 is 35311032313.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 35311032313 = 41141 ⋅858293.

It can be written as a sum of positive squares in 2 ways, for example, as 4938856729 + 26384154624 = 70277^2 + 162432^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31323011353 is a prime.

It is a super-2 number, since 2×31323011353² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31323011359) 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, 36943 + ... + 253003.

It is an arithmetic number, because the mean of its divisors is an integer number (7830843097).

Almost surely, 2^31323011353 is an apocalyptic number.

It is an amenable number.

31323011353 is a deficient number, since it is larger than the sum of its proper divisors (361035).

31323011353 is a wasteful number, since it uses less digits than its factorization.

31323011353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361034.

The product of its (nonzero) digits is 2430, while the sum is 25.

Adding to 31323011353 its reverse (35311032313), we get a palindrome (66634043666).

The spelling of 31323011353 in words is "thirty-one billion, three hundred twenty-three million, eleven thousand, three hundred fifty-three".