31054559 has 2 divisors, whose sum is σ = 31054560. Its totient is φ = 31054558.

The previous prime is 31054553. The next prime is 31054561. The reversal of 31054559 is 95545013.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31054559 - 2¹² = 31050463 is a prime.

Together with 31054561, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31054553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15527279 + 15527280.

It is an arithmetic number, because the mean of its divisors is an integer number (15527280).

Almost surely, 2^31054559 is an apocalyptic number.

31054559 is a deficient number, since it is larger than the sum of its proper divisors (1).

31054559 is an equidigital number, since it uses as much as digits as its factorization.

31054559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 31054559 is about 5572.6617518023. The cubic root of 31054559 is about 314.3222481831.

It can be divided in two parts, 31054 and 559, that added together give a palindrome (31613).

The spelling of 31054559 in words is "thirty-one million, fifty-four thousand, five hundred fifty-nine".