30987423 has 12 divisors (see below), whose sum is σ = 47115640. Its totient is φ = 19570896.

The previous prime is 30987421. The next prime is 30987427. The reversal of 30987423 is 32478903.

It is not a de Polignac number, because 30987423 - 2¹ = 30987421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30987421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90436 + ... + 90777.

Almost surely, 2^30987423 is an apocalyptic number.

30987423 is a deficient number, since it is larger than the sum of its proper divisors (16128217).

30987423 is a wasteful number, since it uses less digits than its factorization.

30987423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181238 (or 181235 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 30987423 is about 5566.6348003080. The cubic root of 30987423 is about 314.0955765416.

The spelling of 30987423 in words is "thirty million, nine hundred eighty-seven thousand, four hundred twenty-three".