30675961 has 4 divisors (see below), whose sum is σ = 30917632. Its totient is φ = 30434292.

The previous prime is 30675949. The next prime is 30675977. The reversal of 30675961 is 16957603.

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 a cyclic number.

It is not a de Polignac number, because 30675961 - 2¹¹ = 30673913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30675961.

It is not an unprimeable number, because it can be changed into a prime (30678961) 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, 120645 + ... + 120898.

It is an arithmetic number, because the mean of its divisors is an integer number (7729408).

Almost surely, 2^30675961 is an apocalyptic number.

30675961 is the 2961-st centered heptagonal number.

It is an amenable number.

30675961 is a deficient number, since it is larger than the sum of its proper divisors (241671).

30675961 is a wasteful number, since it uses less digits than its factorization.

30675961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241670.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 30675961 is about 5538.5883580566. The cubic root of 30675961 is about 313.0396809923.

It can be divided in two parts, 306 and 75961, that added together give a palindrome (76267).

The spelling of 30675961 in words is "thirty million, six hundred seventy-five thousand, nine hundred sixty-one".