31093030 has 16 divisors (see below), whose sum is σ = 56757024. Its totient is φ = 12261760.

The previous prime is 31093019. The next prime is 31093037. The reversal of 31093030 is 3039013.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31092989 and 31093007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31093037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21187 + ... + 22606.

It is an arithmetic number, because the mean of its divisors is an integer number (3547314).

Almost surely, 2^31093030 is an apocalyptic number.

31093030 is a deficient number, since it is larger than the sum of its proper divisors (25663994).

31093030 is a wasteful number, since it uses less digits than its factorization.

31093030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43871.

The product of its (nonzero) digits is 243, while the sum is 19.

The square root of 31093030 is about 5576.1124450642. The cubic root of 31093030 is about 314.4519908215.

The spelling of 31093030 in words is "thirty-one million, ninety-three thousand, thirty".