31145414 has 4 divisors (see below), whose sum is σ = 46718124. Its totient is φ = 15572706.

The previous prime is 31145383. The next prime is 31145423. The reversal of 31145414 is 41454113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41454113 = 1979 ⋅20947.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31145414.

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, 7786352 + ... + 7786355.

It is an arithmetic number, because the mean of its divisors is an integer number (11679531).

Almost surely, 2^31145414 is an apocalyptic number.

31145414 is a deficient number, since it is larger than the sum of its proper divisors (15572710).

31145414 is a wasteful number, since it uses less digits than its factorization.

31145414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15572709.

The product of its digits is 960, while the sum is 23.

The square root of 31145414 is about 5580.8076476438. The cubic root of 31145414 is about 314.6284828005.

Adding to 31145414 its reverse (41454113), we get a palindrome (72599527).

The spelling of 31145414 in words is "thirty-one million, one hundred forty-five thousand, four hundred fourteen".