30201131 has 4 divisors (see below), whose sum is σ = 30224592. Its totient is φ = 30177672.

The previous prime is 30201091. The next prime is 30201137. The reversal of 30201131 is 13110203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13110203 = 2741 ⋅4783.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30201131 is a prime.

It is a super-2 number, since 2×30201131² = 1824216627358322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30201137) 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, 9680 + ... + 12413.

It is an arithmetic number, because the mean of its divisors is an integer number (7556148).

Almost surely, 2^30201131 is an apocalyptic number.

30201131 is a deficient number, since it is larger than the sum of its proper divisors (23461).

30201131 is a wasteful number, since it uses less digits than its factorization.

30201131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23460.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 30201131 is about 5495.5555679112. Note that the first 4 decimals coincide. The cubic root of 30201131 is about 311.4161053783.

Adding to 30201131 its reverse (13110203), we get a palindrome (43311334).

The spelling of 30201131 in words is "thirty million, two hundred one thousand, one hundred thirty-one".