20101031601 has 8 divisors (see below), whose sum is σ = 30630143424. Its totient is φ = 11486303760.

The previous prime is 20101031597. The next prime is 20101031603. The reversal of 20101031601 is 10613010102.

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

It is not a de Polignac number, because 20101031601 - 2² = 20101031597 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20101031603) 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, 478595970 + ... + 478596011.

It is an arithmetic number, because the mean of its divisors is an integer number (3828767928).

Almost surely, 2^20101031601 is an apocalyptic number.

20101031601 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20101031601 is a deficient number, since it is larger than the sum of its proper divisors (10529111823).

20101031601 is an equidigital number, since it uses as much as digits as its factorization.

20101031601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957191991.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20101031601 its reverse (10613010102), we get a palindrome (30714041703).

The spelling of 20101031601 in words is "twenty billion, one hundred one million, thirty-one thousand, six hundred one".