31314541 has 2 divisors, whose sum is σ = 31314542. Its totient is φ = 31314540.

The previous prime is 31314539. The next prime is 31314553. The reversal of 31314541 is 14541313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18028516 + 13286025 = 4246^2 + 3645^2 .

It is a cyclic number.

It is not a de Polignac number, because 31314541 - 2¹ = 31314539 is a prime.

Together with 31314539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31314571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15657270 + 15657271.

It is an arithmetic number, because the mean of its divisors is an integer number (15657271).

Almost surely, 2^31314541 is an apocalyptic number.

It is an amenable number.

31314541 is a deficient number, since it is larger than the sum of its proper divisors (1).

31314541 is an equidigital number, since it uses as much as digits as its factorization.

31314541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 31314541 is about 5595.9396887386. The cubic root of 31314541 is about 315.1969575331.

Adding to 31314541 its reverse (14541313), we get a palindrome (45855854).

The spelling of 31314541 in words is "thirty-one million, three hundred fourteen thousand, five hundred forty-one".