31419379 has 4 divisors (see below), whose sum is σ = 31444384. Its totient is φ = 31394376.

The previous prime is 31419371. The next prime is 31419413. The reversal of 31419379 is 97391413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97391413 = 7 ⋅13913059.

It is a cyclic number.

It is not a de Polignac number, because 31419379 - 2³ = 31419371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31419371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10512 + ... + 13165.

It is an arithmetic number, because the mean of its divisors is an integer number (7861096).

Almost surely, 2^31419379 is an apocalyptic number.

31419379 is a deficient number, since it is larger than the sum of its proper divisors (25005).

31419379 is a wasteful number, since it uses less digits than its factorization.

31419379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25004.

The product of its digits is 20412, while the sum is 37.

The square root of 31419379 is about 5605.2991891602. The cubic root of 31419379 is about 315.5483151804.

The spelling of 31419379 in words is "thirty-one million, four hundred nineteen thousand, three hundred seventy-nine".