31413869 has 4 divisors (see below), whose sum is σ = 31602144. Its totient is φ = 31225596.

The previous prime is 31413857. The next prime is 31413911. The reversal of 31413869 is 96831413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31413869 - 2⁴ = 31413853 is a prime.

It is a super-2 number, since 2×31413869² = 1973662331098322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31413269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93887 + ... + 94220.

It is an arithmetic number, because the mean of its divisors is an integer number (7900536).

Almost surely, 2^31413869 is an apocalyptic number.

It is an amenable number.

31413869 is a deficient number, since it is larger than the sum of its proper divisors (188275).

31413869 is a wasteful number, since it uses less digits than its factorization.

31413869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188274.

The product of its digits is 15552, while the sum is 35.

The square root of 31413869 is about 5604.8076684218. The cubic root of 31413869 is about 315.5298682546.

The spelling of 31413869 in words is "thirty-one million, four hundred thirteen thousand, eight hundred sixty-nine".