31434286 has 16 divisors (see below), whose sum is σ = 50982624. Its totient is φ = 14449824.

The previous prime is 31434283. The next prime is 31434287. The reversal of 31434286 is 68243413.

It is a super-2 number, since 2×31434286² = 1976228672659592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31434283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4540 + ... + 9136.

It is an arithmetic number, because the mean of its divisors is an integer number (3186414).

Almost surely, 2^31434286 is an apocalyptic number.

31434286 is a deficient number, since it is larger than the sum of its proper divisors (19548338).

31434286 is a wasteful number, since it uses less digits than its factorization.

31434286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4875.

The product of its digits is 13824, while the sum is 31.

The square root of 31434286 is about 5606.6287553217. The cubic root of 31434286 is about 315.5982115094.

Adding to 31434286 its reverse (68243413), we get a palindrome (99677699).

The spelling of 31434286 in words is "thirty-one million, four hundred thirty-four thousand, two hundred eighty-six".