1341223661 has 12 divisors (see below), whose sum is σ = 1417027392. Its totient is φ = 1269289224.

The previous prime is 1341223657. The next prime is 1341223669. The reversal of 1341223661 is 1663221431.

It is not a de Polignac number, because 1341223661 - 2² = 1341223657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1341223669) 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, 570290 + ... + 572636.

It is an arithmetic number, because the mean of its divisors is an integer number (118085616).

Almost surely, 2^1341223661 is an apocalyptic number.

It is an amenable number.

1341223661 is a deficient number, since it is larger than the sum of its proper divisors (75803731).

1341223661 is a wasteful number, since it uses less digits than its factorization.

1341223661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968 (or 3949 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 1341223661 is about 36622.7205570531. The cubic root of 1341223661 is about 1102.8092549629.

It can be divided in two parts, 13412 and 23661, that added together give a palindrome (37073).

The spelling of 1341223661 in words is "one billion, three hundred forty-one million, two hundred twenty-three thousand, six hundred sixty-one".