31470093 has 16 divisors (see below), whose sum is σ = 46708800. Its totient is φ = 20941200.

The previous prime is 31470073. The next prime is 31470097. The reversal of 31470093 is 39007413.

It is not a de Polignac number, because 31470093 - 2¹⁰ = 31469069 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31470097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27823 + ... + 28931.

It is an arithmetic number, because the mean of its divisors is an integer number (2919300).

Almost surely, 2^31470093 is an apocalyptic number.

It is an amenable number.

31470093 is a deficient number, since it is larger than the sum of its proper divisors (15238707).

31470093 is a wasteful number, since it uses less digits than its factorization.

31470093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 31470093 is about 5609.8211201428. The cubic root of 31470093 is about 315.7179993635.

It can be divided in two parts, 314 and 70093, that added together give a palindrome (70407).

The spelling of 31470093 in words is "thirty-one million, four hundred seventy thousand, ninety-three".