30371157 has 12 divisors (see below), whose sum is σ = 43927884. Its totient is φ = 20220480.

The previous prime is 30371147. The next prime is 30371183. The reversal of 30371157 is 75117303.

It can be written as a sum of positive squares in 2 ways, for example, as 12680721 + 17690436 = 3561^2 + 4206^2 .

It is not a de Polignac number, because 30371157 - 2⁶ = 30371093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30371157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30371137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6807 + ... + 10347.

It is an arithmetic number, because the mean of its divisors is an integer number (3660657).

Almost surely, 2^30371157 is an apocalyptic number.

It is an amenable number.

30371157 is a deficient number, since it is larger than the sum of its proper divisors (13556727).

30371157 is a wasteful number, since it uses less digits than its factorization.

30371157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4500 (or 4497 counting only the distinct ones).

The product of its (nonzero) digits is 2205, while the sum is 27.

The square root of 30371157 is about 5511.0032661939. The cubic root of 30371157 is about 311.9994144466. Note that the first 3 decimals are identical.

The spelling of 30371157 in words is "thirty million, three hundred seventy-one thousand, one hundred fifty-seven".