1351230481 has 4 divisors (see below), whose sum is σ = 1384187364. Its totient is φ = 1318273600.

The previous prime is 1351230479. The next prime is 1351230487. The reversal of 1351230481 is 1840321531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63856081 + 1287374400 = 7991^2 + 35880^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351230481 - 2¹ = 1351230479 is a prime.

It is a super-2 number, since 2×1351230481² = 3651647625566982722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1351230487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16478380 + ... + 16478461.

It is an arithmetic number, because the mean of its divisors is an integer number (346046841).

Almost surely, 2^1351230481 is an apocalyptic number.

It is an amenable number.

1351230481 is a deficient number, since it is larger than the sum of its proper divisors (32956883).

1351230481 is an equidigital number, since it uses as much as digits as its factorization.

1351230481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32956882.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1351230481 is about 36759.0870534076. The cubic root of 1351230481 is about 1105.5451350879.

The spelling of 1351230481 in words is "one billion, three hundred fifty-one million, two hundred thirty thousand, four hundred eighty-one".