1001231051 has 4 divisors (see below), whose sum is σ = 1002365832. Its totient is φ = 1000096272.

The previous prime is 1001230991. The next prime is 1001231053. The reversal of 1001231051 is 1501321001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1501321001 = 2897 ⋅518233.

It is a cyclic number.

It is not a de Polignac number, because 1001231051 - 2⁶ = 1001230987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001231053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566066 + ... + 567831.

It is an arithmetic number, because the mean of its divisors is an integer number (250591458).

Almost surely, 2^1001231051 is an apocalyptic number.

1001231051 is a deficient number, since it is larger than the sum of its proper divisors (1134781).

1001231051 is an equidigital number, since it uses as much as digits as its factorization.

1001231051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134780.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 1001231051 is about 31642.2352402608. The cubic root of 1001231051 is about 1000.4101820610.

Adding to 1001231051 its reverse (1501321001), we get a palindrome (2502552052).

The spelling of 1001231051 in words is "one billion, one million, two hundred thirty-one thousand, fifty-one".