30987941 has 4 divisors (see below), whose sum is σ = 31987584. Its totient is φ = 29988300.

The previous prime is 30987871. The next prime is 30987953. The reversal of 30987941 is 14978903.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14978903 = 3517 ⋅4259.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30987941 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 (30987961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499775 + ... + 499836.

It is an arithmetic number, because the mean of its divisors is an integer number (7996896).

Almost surely, 2^30987941 is an apocalyptic number.

30987941 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30987941 is a deficient number, since it is larger than the sum of its proper divisors (999643).

30987941 is an equidigital number, since it uses as much as digits as its factorization.

30987941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999642.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 30987941 is about 5566.6813273260. The cubic root of 30987941 is about 314.0973267205.

The spelling of 30987941 in words is "thirty million, nine hundred eighty-seven thousand, nine hundred forty-one".