31383429 has 16 divisors (see below), whose sum is σ = 52170240. Its totient is φ = 16302960.

The previous prime is 31383419. The next prime is 31383433. The reversal of 31383429 is 92438313.

It is a happy number.

It is not a de Polignac number, because 31383429 - 2⁷ = 31383301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 31383429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31383419) 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 15 ways as a sum of consecutive naturals, for example, 67699 + ... + 68160.

It is an arithmetic number, because the mean of its divisors is an integer number (3260640).

Almost surely, 2^31383429 is an apocalyptic number.

It is an amenable number.

31383429 is a deficient number, since it is larger than the sum of its proper divisors (20786811).

31383429 is a wasteful number, since it uses less digits than its factorization.

31383429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135880.

The product of its digits is 15552, while the sum is 33.

The square root of 31383429 is about 5602.0914844369. The cubic root of 31383429 is about 315.4279193014.

The spelling of 31383429 in words is "thirty-one million, three hundred eighty-three thousand, four hundred twenty-nine".