31540203353 has 2 divisors, whose sum is σ = 31540203354. Its totient is φ = 31540203352.

The previous prime is 31540203313. The next prime is 31540203367. The reversal of 31540203353 is 35330204513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21818834944 + 9721368409 = 147712^2 + 98597^2 .

It is a cyclic number.

It is not a de Polignac number, because 31540203353 - 2¹⁴ = 31540186969 is a prime.

It is not a weakly prime, because it can be changed into another prime (31540203313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15770101676 + 15770101677.

It is an arithmetic number, because the mean of its divisors is an integer number (15770101677).

Almost surely, 2^31540203353 is an apocalyptic number.

It is an amenable number.

31540203353 is a deficient number, since it is larger than the sum of its proper divisors (1).

31540203353 is an equidigital number, since it uses as much as digits as its factorization.

31540203353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 29.

Adding to 31540203353 its reverse (35330204513), we get a palindrome (66870407866).

The spelling of 31540203353 in words is "thirty-one billion, five hundred forty million, two hundred three thousand, three hundred fifty-three".