31380068 has 12 divisors (see below), whose sum is σ = 54957420. Its totient is φ = 15677952.

The previous prime is 31380031. The next prime is 31380101. The reversal of 31380068 is 86008313.

It can be written as a sum of positive squares in 2 ways, for example, as 5654884 + 25725184 = 2378^2 + 5072^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31380068.

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, 5480 + ... + 9632.

It is an arithmetic number, because the mean of its divisors is an integer number (4579785).

Almost surely, 2^31380068 is an apocalyptic number.

It is an amenable number.

31380068 is a deficient number, since it is larger than the sum of its proper divisors (23577352).

31380068 is a wasteful number, since it uses less digits than its factorization.

31380068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6046 (or 6044 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 31380068 is about 5601.7914991545. The cubic root of 31380068 is about 315.4166586763.

The spelling of 31380068 in words is "thirty-one million, three hundred eighty thousand, sixty-eight".