31243934 has 4 divisors (see below), whose sum is σ = 46865904. Its totient is φ = 15621966.

The previous prime is 31243931. The next prime is 31243937. The reversal of 31243934 is 43934213.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (31243931) and next prime (31243937).

It is a junction number, because it is equal to n+sod(n) for n = 31243897 and 31243906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31243931) 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, 7810982 + ... + 7810985.

It is an arithmetic number, because the mean of its divisors is an integer number (11716476).

Almost surely, 2^31243934 is an apocalyptic number.

31243934 is a deficient number, since it is larger than the sum of its proper divisors (15621970).

31243934 is a wasteful number, since it uses less digits than its factorization.

31243934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15621969.

The product of its digits is 7776, while the sum is 29.

The square root of 31243934 is about 5589.6273578835. The cubic root of 31243934 is about 314.9598806720.

The spelling of 31243934 in words is "thirty-one million, two hundred forty-three thousand, nine hundred thirty-four".