31103429 has 8 divisors (see below), whose sum is σ = 37092480. Its totient is φ = 25500816.

The previous prime is 31103419. The next prime is 31103441. The reversal of 31103429 is 92430113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31103429 - 2⁸ = 31103173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96434 + ... + 96755.

It is an arithmetic number, because the mean of its divisors is an integer number (4636560).

Almost surely, 2^31103429 is an apocalyptic number.

It is an amenable number.

31103429 is a deficient number, since it is larger than the sum of its proper divisors (5989051).

31103429 is a wasteful number, since it uses less digits than its factorization.

31103429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193219.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 31103429 is about 5577.0448267877. The cubic root of 31103429 is about 314.4870428548.

The spelling of 31103429 in words is "thirty-one million, one hundred three thousand, four hundred twenty-nine".