1319801431 has 4 divisors (see below), whose sum is σ = 1421324632. Its totient is φ = 1218278232.

The previous prime is 1319801411. The next prime is 1319801437. The reversal of 1319801431 is 1341089131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1341089131 = 41 ⋅32709491.

It is a cyclic number.

It is not a de Polignac number, because 1319801431 - 2¹⁵ = 1319768663 is a prime.

It is a super-2 number, since 2×1319801431² = 3483751634539295522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1319801393 and 1319801402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1319801437) 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, 50761581 + ... + 50761606.

It is an arithmetic number, because the mean of its divisors is an integer number (355331158).

Almost surely, 2^1319801431 is an apocalyptic number.

1319801431 is a deficient number, since it is larger than the sum of its proper divisors (101523201).

1319801431 is a wasteful number, since it uses less digits than its factorization.

1319801431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101523200.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1319801431 is about 36329.0714304674. The cubic root of 1319801431 is about 1096.9063020436.

The spelling of 1319801431 in words is "one billion, three hundred nineteen million, eight hundred one thousand, four hundred thirty-one".