36421031 has 4 divisors (see below), whose sum is σ = 36435000. Its totient is φ = 36407064.

The previous prime is 36421019. The next prime is 36421037. The reversal of 36421031 is 13012463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13012463 = 17 ⋅765439.

It is a cyclic number.

It is not a de Polignac number, because 36421031 - 2¹⁴ = 36404647 is a prime.

It is a super-2 number, since 2×36421031² = 2652982998205922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36420994 and 36421012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36421037) 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, 1781 + ... + 8718.

It is an arithmetic number, because the mean of its divisors is an integer number (9108750).

Almost surely, 2^36421031 is an apocalyptic number.

36421031 is a deficient number, since it is larger than the sum of its proper divisors (13969).

36421031 is a wasteful number, since it uses less digits than its factorization.

36421031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13968.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 36421031 is about 6034.9839270706. The cubic root of 36421031 is about 331.4749739773.

Adding to 36421031 its reverse (13012463), we get a palindrome (49433494).

The spelling of 36421031 in words is "thirty-six million, four hundred twenty-one thousand, thirty-one".