1361376431 has 16 divisors (see below), whose sum is σ = 1407931008. Its totient is φ = 1315591200.

The previous prime is 1361376413. The next prime is 1361376461. The reversal of 1361376431 is 1346731631.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1361376431 - 2²⁶ = 1294267567 is a prime.

It is a super-2 number, since 2×1361376431² = 3706691573764595522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1361376391 and 1361376400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361376461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2059241 + ... + 2059901.

It is an arithmetic number, because the mean of its divisors is an integer number (87995688).

Almost surely, 2^1361376431 is an apocalyptic number.

1361376431 is a deficient number, since it is larger than the sum of its proper divisors (46554577).

1361376431 is a wasteful number, since it uses less digits than its factorization.

1361376431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142.

The product of its digits is 27216, while the sum is 35.

The square root of 1361376431 is about 36896.8349726640. The cubic root of 1361376431 is about 1108.3052977450.

The spelling of 1361376431 in words is "one billion, three hundred sixty-one million, three hundred seventy-six thousand, four hundred thirty-one".