31145322001 has 8 divisors (see below), whose sum is σ = 31470850944. Its totient is φ = 30820238400.

The previous prime is 31145321981. The next prime is 31145322007. The reversal of 31145322001 is 10022354113.

It is a happy number.

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-31145322001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31145322007) 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, 30201 + ... + 251401.

It is an arithmetic number, because the mean of its divisors is an integer number (3933856368).

Almost surely, 2^31145322001 is an apocalyptic number.

It is an amenable number.

31145322001 is a deficient number, since it is larger than the sum of its proper divisors (325528943).

31145322001 is a wasteful number, since it uses less digits than its factorization.

31145322001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222671.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 31145322001 its reverse (10022354113), we get a palindrome (41167676114).

The spelling of 31145322001 in words is "thirty-one billion, one hundred forty-five million, three hundred twenty-two thousand, one".