1351801323 has 12 divisors (see below), whose sum is σ = 1970517120. Its totient is φ = 892932336.

The previous prime is 1351801309. The next prime is 1351801337. The reversal of 1351801323 is 3231081531.

1351801323 is a `hidden beast` number, since 13 + 518 + 0 + 132 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (1351801309) and next prime (1351801337).

It is not a de Polignac number, because 1351801323 - 2⁹ = 1351800811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1351801343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 688011 + ... + 689972.

It is an arithmetic number, because the mean of its divisors is an integer number (164209760).

Almost surely, 2^1351801323 is an apocalyptic number.

1351801323 is a deficient number, since it is larger than the sum of its proper divisors (618715797).

1351801323 is a wasteful number, since it uses less digits than its factorization.

1351801323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378098 (or 1378095 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1351801323 is about 36766.8508714032. The cubic root of 1351801323 is about 1105.7007963549.

Adding to 1351801323 its reverse (3231081531), we get a palindrome (4582882854).

It can be divided in two parts, 135180 and 1323, that added together give a triangular number (136503 = T₅₂₂).

The spelling of 1351801323 in words is "one billion, three hundred fifty-one million, eight hundred one thousand, three hundred twenty-three".