30124991 has 8 divisors (see below), whose sum is σ = 32854080. Its totient is φ = 27454752.

The previous prime is 30124981. The next prime is 30125023. The reversal of 30124991 is 19942103.

It is a happy number.

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

It is not a de Polignac number, because 30124991 - 2¹⁴ = 30108607 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 (30124921) 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, 13640 + ... + 15693.

It is an arithmetic number, because the mean of its divisors is an integer number (4106760).

Almost surely, 2^30124991 is an apocalyptic number.

30124991 is a deficient number, since it is larger than the sum of its proper divisors (2729089).

30124991 is a wasteful number, since it uses less digits than its factorization.

30124991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29425.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 30124991 is about 5488.6237801474. The cubic root of 30124991 is about 311.1541816740.

The spelling of 30124991 in words is "thirty million, one hundred twenty-four thousand, nine hundred ninety-one".