1451831 has 2 divisors, whose sum is σ = 1451832. Its totient is φ = 1451830.

The previous prime is 1451797. The next prime is 1451833. The reversal of 1451831 is 1381541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1451831 - 2⁶ = 1451767 is a prime.

It is a super-2 number, since 2×1451831² = 4215626505122, which contains 22 as substring.

Together with 1451833, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1451797 and 1451806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1451833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725915 + 725916.

It is an arithmetic number, because the mean of its divisors is an integer number (725916).

2^1451831 is an apocalyptic number.

1451831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451831 is an equidigital number, since it uses as much as digits as its factorization.

1451831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 23.

The square root of 1451831 is about 1204.9194993857. The cubic root of 1451831 is about 113.2327413855.

The spelling of 1451831 in words is "one million, four hundred fifty-one thousand, eight hundred thirty-one".