31144214 has 4 divisors (see below), whose sum is σ = 46716324. Its totient is φ = 15572106.

The previous prime is 31144207. The next prime is 31144241. The reversal of 31144214 is 41244113.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7786052 + ... + 7786055.

It is an arithmetic number, because the mean of its divisors is an integer number (11679081).

Almost surely, 2^31144214 is an apocalyptic number.

31144214 is a deficient number, since it is larger than the sum of its proper divisors (15572110).

31144214 is a wasteful number, since it uses less digits than its factorization.

31144214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15572109.

The product of its digits is 384, while the sum is 20.

The square root of 31144214 is about 5580.7001352877. The cubic root of 31144214 is about 314.6244419805.

Adding to 31144214 its reverse (41244113), we get a palindrome (72388327).

The spelling of 31144214 in words is "thirty-one million, one hundred forty-four thousand, two hundred fourteen".