2321345531 has 2 divisors, whose sum is σ = 2321345532. Its totient is φ = 2321345530.

The previous prime is 2321345489. The next prime is 2321345581. The reversal of 2321345531 is 1355431232.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2321345531 - 2¹⁴ = 2321329147 is a prime.

It is a super-2 number, since 2×2321345531² = 10777290148587343922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2321345494 and 2321345503.

It is not a weakly prime, because it can be changed into another prime (2321345581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160672765 + 1160672766.

It is an arithmetic number, because the mean of its divisors is an integer number (1160672766).

Almost surely, 2^2321345531 is an apocalyptic number.

2321345531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321345531 is an equidigital number, since it uses as much as digits as its factorization.

2321345531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 29.

The square root of 2321345531 is about 48180.3438240119. The cubic root of 2321345531 is about 1324.0770657840.

Adding to 2321345531 its reverse (1355431232), we get a palindrome (3676776763).

The spelling of 2321345531 in words is "two billion, three hundred twenty-one million, three hundred forty-five thousand, five hundred thirty-one".