31494899 has 4 divisors (see below), whose sum is σ = 32580960. Its totient is φ = 30408840.

The previous prime is 31494887. The next prime is 31494907. The reversal of 31494899 is 99849413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99849413 = 7151 ⋅13963.

It is a cyclic number.

It is not a de Polignac number, because 31494899 - 2⁸ = 31494643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31494809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542987 + ... + 543044.

It is an arithmetic number, because the mean of its divisors is an integer number (8145240).

Almost surely, 2^31494899 is an apocalyptic number.

31494899 is a deficient number, since it is larger than the sum of its proper divisors (1086061).

31494899 is a wasteful number, since it uses less digits than its factorization.

31494899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086060.

The product of its digits is 279936, while the sum is 47.

The square root of 31494899 is about 5612.0316285638. The cubic root of 31494899 is about 315.8009314756.

The spelling of 31494899 in words is "thirty-one million, four hundred ninety-four thousand, eight hundred ninety-nine".