30697131 has 8 divisors (see below), whose sum is σ = 41138064. Its totient is φ = 20360480.

The previous prime is 30697081. The next prime is 30697133. The reversal of 30697131 is 13179603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30697131 - 2¹⁴ = 30680747 is a prime.

It is a super-2 number, since 2×30697131² = 1884627703262322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30697133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25380 + ... + 26561.

It is an arithmetic number, because the mean of its divisors is an integer number (5142258).

Almost surely, 2^30697131 is an apocalyptic number.

30697131 is a deficient number, since it is larger than the sum of its proper divisors (10440933).

30697131 is a wasteful number, since it uses less digits than its factorization.

30697131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52141.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 30697131 is about 5540.4991652377. The cubic root of 30697131 is about 313.1116757610. Note that the first 3 decimals are identical.

The spelling of 30697131 in words is "thirty million, six hundred ninety-seven thousand, one hundred thirty-one".