31219426 has 8 divisors (see below), whose sum is σ = 53519040. Its totient is φ = 13379748.

The previous prime is 31219393. The next prime is 31219483. The reversal of 31219426 is 62491213.

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

It is a junction number, because it is equal to n+sod(n) for n = 31219394 and 31219403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114966 + ... + 1114993.

It is an arithmetic number, because the mean of its divisors is an integer number (6689880).

Almost surely, 2^31219426 is an apocalyptic number.

31219426 is a deficient number, since it is larger than the sum of its proper divisors (22299614).

31219426 is a wasteful number, since it uses less digits than its factorization.

31219426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229968.

The product of its digits is 2592, while the sum is 28.

The square root of 31219426 is about 5587.4346528617. The cubic root of 31219426 is about 314.8775067523.

The spelling of 31219426 in words is "thirty-one million, two hundred nineteen thousand, four hundred twenty-six".