31427149 has 8 divisors (see below), whose sum is σ = 34936832. Its totient is φ = 28073520.

The previous prime is 31427147. The next prime is 31427173. The reversal of 31427149 is 94172413.

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 31427149 - 2¹ = 31427147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31427149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31427147) 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, 38589 + ... + 39394.

It is an arithmetic number, because the mean of its divisors is an integer number (4367104).

Almost surely, 2^31427149 is an apocalyptic number.

It is an amenable number.

31427149 is a deficient number, since it is larger than the sum of its proper divisors (3509683).

31427149 is a wasteful number, since it uses less digits than its factorization.

31427149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78027.

The product of its digits is 6048, while the sum is 31.

The square root of 31427149 is about 5605.9922404513. The cubic root of 31427149 is about 315.5743246944.

The spelling of 31427149 in words is "thirty-one million, four hundred twenty-seven thousand, one hundred forty-nine".