30761421 has 4 divisors (see below), whose sum is σ = 41015232. Its totient is φ = 20507612.

The previous prime is 30761413. The next prime is 30761429. The reversal of 30761421 is 12416703.

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.

It is an interprime number because it is at equal distance from previous prime (30761413) and next prime (30761429).

It is a cyclic number.

It is not a de Polignac number, because 30761421 - 2³ = 30761413 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30761391 and 30761400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30761429) 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, 5126901 + ... + 5126906.

It is an arithmetic number, because the mean of its divisors is an integer number (10253808).

Almost surely, 2^30761421 is an apocalyptic number.

It is an amenable number.

30761421 is a deficient number, since it is larger than the sum of its proper divisors (10253811).

30761421 is a wasteful number, since it uses less digits than its factorization.

30761421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10253810.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 30761421 is about 5546.2979544918. The cubic root of 30761421 is about 313.3301099965.

The spelling of 30761421 in words is "thirty million, seven hundred sixty-one thousand, four hundred twenty-one".