1431642361 has 2 divisors, whose sum is σ = 1431642362. Its totient is φ = 1431642360.

The previous prime is 1431642319. The next prime is 1431642371. The reversal of 1431642361 is 1632461341.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1374926400 + 56715961 = 37080^2 + 7531^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1431642361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1431642371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715821180 + 715821181.

It is an arithmetic number, because the mean of its divisors is an integer number (715821181).

Almost surely, 2^1431642361 is an apocalyptic number.

It is an amenable number.

1431642361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431642361 is an equidigital number, since it uses as much as digits as its factorization.

1431642361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 31.

The square root of 1431642361 is about 37837.0501096478. The cubic root of 1431642361 is about 1127.0543167990.

The spelling of 1431642361 in words is "one billion, four hundred thirty-one million, six hundred forty-two thousand, three hundred sixty-one".