1651162231 has 2 divisors, whose sum is σ = 1651162232. Its totient is φ = 1651162230.

The previous prime is 1651162229. The next prime is 1651162273. The reversal of 1651162231 is 1322611561.

It is a weak prime.

It is an emirp because it is prime and its reverse (1322611561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1651162231 - 2¹ = 1651162229 is a prime.

It is a super-2 number, since 2×1651162231² = 5452673426161794722, which contains 22 as substring.

Together with 1651162229, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1651162231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1651162631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825581115 + 825581116.

It is an arithmetic number, because the mean of its divisors is an integer number (825581116).

Almost surely, 2^1651162231 is an apocalyptic number.

1651162231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1651162231 is an equidigital number, since it uses as much as digits as its factorization.

1651162231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 28.

The square root of 1651162231 is about 40634.4955794950. The cubic root of 1651162231 is about 1181.9431335451.

Adding to 1651162231 its reverse (1322611561), we get a palindrome (2973773792).

The spelling of 1651162231 in words is "one billion, six hundred fifty-one million, one hundred sixty-two thousand, two hundred thirty-one".