1351440403 has 2 divisors, whose sum is σ = 1351440404. Its totient is φ = 1351440402.

The previous prime is 1351440383. The next prime is 1351440407. The reversal of 1351440403 is 3040441531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1351440403 - 2¹⁷ = 1351309331 is a prime.

It is not a weakly prime, because it can be changed into another prime (1351440407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675720201 + 675720202.

It is an arithmetic number, because the mean of its divisors is an integer number (675720202).

Almost surely, 2^1351440403 is an apocalyptic number.

1351440403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351440403 is an equidigital number, since it uses as much as digits as its factorization.

1351440403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1351440403 is about 36761.9423181094. The cubic root of 1351440403 is about 1105.6023832114.

Adding to 1351440403 its reverse (3040441531), we get a palindrome (4391881934).

The spelling of 1351440403 in words is "one billion, three hundred fifty-one million, four hundred forty thousand, four hundred three".