1361213141 has 4 divisors (see below), whose sum is σ = 1361339232. Its totient is φ = 1361087052.

The previous prime is 1361213129. The next prime is 1361213153. The reversal of 1361213141 is 1413121631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1361213129) and next prime (1361213153).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1361213141 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 (1361213041) 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, 45161 + ... + 69006.

It is an arithmetic number, because the mean of its divisors is an integer number (340334808).

Almost surely, 2^1361213141 is an apocalyptic number.

It is an amenable number.

1361213141 is a deficient number, since it is larger than the sum of its proper divisors (126091).

1361213141 is a wasteful number, since it uses less digits than its factorization.

1361213141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126090.

The product of its digits is 432, while the sum is 23.

The square root of 1361213141 is about 36894.6221148828. The cubic root of 1361213141 is about 1108.2609841606.

Adding to 1361213141 its reverse (1413121631), we get a palindrome (2774334772).

The spelling of 1361213141 in words is "one billion, three hundred sixty-one million, two hundred thirteen thousand, one hundred forty-one".