31061230 has 16 divisors (see below), whose sum is σ = 56154384. Its totient is φ = 12370240.

The previous prime is 31061221. The next prime is 31061249. The reversal of 31061230 is 3216013.

It is a super-2 number, since 2×31061230² = 1929600018225800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 4336 + ... + 8995.

It is an arithmetic number, because the mean of its divisors is an integer number (3509649).

Almost surely, 2^31061230 is an apocalyptic number.

31061230 is a deficient number, since it is larger than the sum of its proper divisors (25093154).

31061230 is a wasteful number, since it uses less digits than its factorization.

31061230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13571.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 31061230 is about 5573.2602666662. The cubic root of 31061230 is about 314.3447536666.

Adding to 31061230 its reverse (3216013), we get a palindrome (34277243).

The spelling of 31061230 in words is "thirty-one million, sixty-one thousand, two hundred thirty".