30938450951 has 4 divisors (see below), whose sum is σ = 30940962600. Its totient is φ = 30935939304.

The previous prime is 30938450903. The next prime is 30938450999. The reversal of 30938450951 is 15905483903.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15905483903 = 1453 ⋅10946651.

It is an interprime number because it is at equal distance from previous prime (30938450903) and next prime (30938450999).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30938450951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30938450896 and 30938450905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30938450351) 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, 1237256 + ... + 1262013.

It is an arithmetic number, because the mean of its divisors is an integer number (7735240650).

Almost surely, 2^30938450951 is an apocalyptic number.

30938450951 is a deficient number, since it is larger than the sum of its proper divisors (2511649).

30938450951 is a wasteful number, since it uses less digits than its factorization.

30938450951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511648.

The product of its (nonzero) digits is 583200, while the sum is 47.

The spelling of 30938450951 in words is "thirty billion, nine hundred thirty-eight million, four hundred fifty thousand, nine hundred fifty-one".