31354031 has 2 divisors, whose sum is σ = 31354032. Its totient is φ = 31354030.

The previous prime is 31354027. The next prime is 31354039. The reversal of 31354031 is 13045313.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31354031 - 2² = 31354027 is a prime.

It is a super-2 number, since 2×31354031² = 1966150519897922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 31353994 and 31354012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31354039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15677015 + 15677016.

It is an arithmetic number, because the mean of its divisors is an integer number (15677016).

Almost surely, 2^31354031 is an apocalyptic number.

31354031 is a deficient number, since it is larger than the sum of its proper divisors (1).

31354031 is an equidigital number, since it uses as much as digits as its factorization.

31354031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 31354031 is about 5599.4670282090. The cubic root of 31354031 is about 315.3293975952.

Adding to 31354031 its reverse (13045313), we get a palindrome (44399344).

The spelling of 31354031 in words is "thirty-one million, three hundred fifty-four thousand, thirty-one".