31616427 has 8 divisors (see below), whose sum is σ = 42340240. Its totient is φ = 20985120.

The previous prime is 31616423. The next prime is 31616479. The reversal of 31616427 is 72461613.

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

It is not a de Polignac number, because 31616427 - 2² = 31616423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31616394 and 31616403.

It is not an unprimeable number, because it can be changed into a prime (31616423) 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, 22324 + ... + 23697.

It is an arithmetic number, because the mean of its divisors is an integer number (5292530).

Almost surely, 2^31616427 is an apocalyptic number.

31616427 is a deficient number, since it is larger than the sum of its proper divisors (10723813).

31616427 is a wasteful number, since it uses less digits than its factorization.

31616427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46253.

The product of its digits is 6048, while the sum is 30.

The square root of 31616427 is about 5622.8486552636. The cubic root of 31616427 is about 316.2065992611.

The spelling of 31616427 in words is "thirty-one million, six hundred sixteen thousand, four hundred twenty-seven".