31427246 has 8 divisors (see below), whose sum is σ = 49190544. Its totient is φ = 15030400.

The previous prime is 31427243. The next prime is 31427267. The reversal of 31427246 is 64272413.

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

It is a super-2 number, since 2×31427246² = 1975343582289032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31427243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341555 + ... + 341646.

It is an arithmetic number, because the mean of its divisors is an integer number (6148818).

Almost surely, 2^31427246 is an apocalyptic number.

31427246 is a deficient number, since it is larger than the sum of its proper divisors (17763298).

31427246 is a wasteful number, since it uses less digits than its factorization.

31427246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683226.

The product of its digits is 8064, while the sum is 29.

The square root of 31427246 is about 5606.0008919015. Note that the first 3 decimals coincide. The cubic root of 31427246 is about 315.5746493678.

Adding to 31427246 its reverse (64272413), we get a palindrome (95699659).

The spelling of 31427246 in words is "thirty-one million, four hundred twenty-seven thousand, two hundred forty-six".