201031031 has 8 divisors (see below), whose sum is σ = 202298880. Its totient is φ = 199767672.

The previous prime is 201031013. The next prime is 201031043. The reversal of 201031031 is 130130102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201031031 is a prime.

It is a super-2 number, since 2×201031031² = 80826950849845922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201031081) 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, 134816 + ... + 136298.

It is an arithmetic number, because the mean of its divisors is an integer number (25287360).

Almost surely, 2^201031031 is an apocalyptic number.

201031031 is a deficient number, since it is larger than the sum of its proper divisors (1267849).

201031031 is a wasteful number, since it uses less digits than its factorization.

201031031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245.

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

The square root of 201031031 is about 14178.5412155130. The cubic root of 201031031 is about 585.8067433801.

Adding to 201031031 its reverse (130130102), we get a palindrome (331161133).

The spelling of 201031031 in words is "two hundred one million, thirty-one thousand, thirty-one".