31196427 has 16 divisors (see below), whose sum is σ = 42506880. Its totient is φ = 20345472.

The previous prime is 31196413. The next prime is 31196453. The reversal of 31196427 is 72469113.

It is not a de Polignac number, because 31196427 - 2¹¹ = 31194379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31196467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59388 + ... + 59910.

It is an arithmetic number, because the mean of its divisors is an integer number (2656680).

Almost surely, 2^31196427 is an apocalyptic number.

31196427 is a deficient number, since it is larger than the sum of its proper divisors (11310453).

31196427 is a wasteful number, since it uses less digits than its factorization.

31196427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922.

The product of its digits is 9072, while the sum is 33.

The square root of 31196427 is about 5585.3761735446. The cubic root of 31196427 is about 314.8001655178.

The spelling of 31196427 in words is "thirty-one million, one hundred ninety-six thousand, four hundred twenty-seven".