2103311531 has 2 divisors, whose sum is σ = 2103311532. Its totient is φ = 2103311530.

The previous prime is 2103311527. The next prime is 2103311569. The reversal of 2103311531 is 1351133012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2103311531 - 2² = 2103311527 is a prime.

It is a super-2 number, since 2×2103311531² = 8847838792875127922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2103316531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051655765 + 1051655766.

It is an arithmetic number, because the mean of its divisors is an integer number (1051655766).

Almost surely, 2^2103311531 is an apocalyptic number.

2103311531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103311531 is an equidigital number, since it uses as much as digits as its factorization.

2103311531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 2103311531 is about 45861.8744819703. The cubic root of 2103311531 is about 1281.2519349057.

Adding to 2103311531 its reverse (1351133012), we get a palindrome (3454444543).

The spelling of 2103311531 in words is "two billion, one hundred three million, three hundred eleven thousand, five hundred thirty-one".