31070214 has 36 divisors (see below), whose sum is σ = 78311844. Its totient is φ = 8876952.

The previous prime is 31070197. The next prime is 31070219. The reversal of 31070214 is 41207013.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31070219) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16732 + ... + 18495.

It is an arithmetic number, because the mean of its divisors is an integer number (2175329).

Almost surely, 2^31070214 is an apocalyptic number.

31070214 is an abundant number, since it is smaller than the sum of its proper divisors (47241630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31070214 is a wasteful number, since it uses less digits than its factorization.

31070214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35249 (or 35239 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 31070214 is about 5574.0661998222. The cubic root of 31070214 is about 314.3750572641.

Adding to 31070214 its reverse (41207013), we get a palindrome (72277227).

The spelling of 31070214 in words is "thirty-one million, seventy thousand, two hundred fourteen".