312020001 has 24 divisors (see below), whose sum is σ = 483013440. Its totient is φ = 193586976.

The previous prime is 312019999. The next prime is 312020011. The reversal of 312020001 is 100020213.

It is a happy number.

It is not a de Polignac number, because 312020001 - 2¹ = 312019999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (312020011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12711 + ... + 28028.

It is an arithmetic number, because the mean of its divisors is an integer number (20125560).

Almost surely, 2^312020001 is an apocalyptic number.

It is an amenable number.

312020001 is a deficient number, since it is larger than the sum of its proper divisors (170993439).

312020001 is a wasteful number, since it uses less digits than its factorization.

312020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40805 (or 40802 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 312020001 is about 17664.0878904063. The cubic root of 312020001 is about 678.2567813744.

Adding to 312020001 its reverse (100020213), we get a palindrome (412040214).

The spelling of 312020001 in words is "three hundred twelve million, twenty thousand, one".