201031969 has 2 divisors, whose sum is σ = 201031970. Its totient is φ = 201031968.

The previous prime is 201031907. The next prime is 201032017. The reversal of 201031969 is 969130102.

201031969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190108944 + 10923025 = 13788^2 + 3305^2 .

It is a cyclic number.

It is not a de Polignac number, because 201031969 - 2¹¹ = 201029921 is a prime.

It is a super-2 number, since 2×201031969² = 80827705120033922, which contains 22 as substring.

It is equal to p_11132968 and since 201031969 and 11132968 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201031969.

It is not a weakly prime, because it can be changed into another prime (201031469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100515984 + 100515985.

It is an arithmetic number, because the mean of its divisors is an integer number (100515985).

Almost surely, 2^201031969 is an apocalyptic number.

It is an amenable number.

201031969 is a deficient number, since it is larger than the sum of its proper divisors (1).

201031969 is an equidigital number, since it uses as much as digits as its factorization.

201031969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 201031969 is about 14178.5742936305. The cubic root of 201031969 is about 585.8076544929.

The spelling of 201031969 in words is "two hundred one million, thirty-one thousand, nine hundred sixty-nine".