1451220231 has 8 divisors (see below), whose sum is σ = 1944131584. Its totient is φ = 962894520.

The previous prime is 1451220139. The next prime is 1451220257. The reversal of 1451220231 is 1320221541.

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

It is not a de Polignac number, because 1451220231 - 2⁷ = 1451220103 is a prime.

It is a super-2 number, since 2×1451220231² = 4212080317727386722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1451220198 and 1451220207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451220271) 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, 1145671 + ... + 1146936.

It is an arithmetic number, because the mean of its divisors is an integer number (243016448).

Almost surely, 2^1451220231 is an apocalyptic number.

1451220231 is a deficient number, since it is larger than the sum of its proper divisors (492911353).

1451220231 is a wasteful number, since it uses less digits than its factorization.

1451220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292821.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1451220231 is about 38094.8845778538. The cubic root of 1451220231 is about 1132.1686057735.

Adding to 1451220231 its reverse (1320221541), we get a palindrome (2771441772).

It can be divided in two parts, 14512 and 20231, that added together give a palindrome (34743).

The spelling of 1451220231 in words is "one billion, four hundred fifty-one million, two hundred twenty thousand, two hundred thirty-one".