1688152231 has 2 divisors, whose sum is σ = 1688152232. Its totient is φ = 1688152230.

The previous prime is 1688152217. The next prime is 1688152273. The reversal of 1688152231 is 1322518861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1688152231 - 2¹³ = 1688144039 is a prime.

It is a super-2 number, since 2×1688152231² = 5699715910060554722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1688152201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 844076115 + 844076116.

It is an arithmetic number, because the mean of its divisors is an integer number (844076116).

Almost surely, 2^1688152231 is an apocalyptic number.

1688152231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1688152231 is an equidigital number, since it uses as much as digits as its factorization.

1688152231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 37.

The square root of 1688152231 is about 41087.1297488642. The cubic root of 1688152231 is about 1190.7041547263.

The spelling of 1688152231 in words is "one billion, six hundred eighty-eight million, one hundred fifty-two thousand, two hundred thirty-one".