31068428 has 6 divisors (see below), whose sum is σ = 54369756. Its totient is φ = 15534212.

The previous prime is 31068371. The next prime is 31068451. The reversal of 31068428 is 82486013.

It is a junction number, because it is equal to n+sod(n) for n = 31068394 and 31068403.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3883550 + ... + 3883557.

It is an arithmetic number, because the mean of its divisors is an integer number (9061626).

Almost surely, 2^31068428 is an apocalyptic number.

It is an amenable number.

31068428 is a deficient number, since it is larger than the sum of its proper divisors (23301328).

31068428 is a wasteful number, since it uses less digits than its factorization.

31068428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7767111 (or 7767109 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 31068428 is about 5573.9059913135. The cubic root of 31068428 is about 314.3690334389.

The spelling of 31068428 in words is "thirty-one million, sixty-eight thousand, four hundred twenty-eight".