31436141 has 4 divisors (see below), whose sum is σ = 34293984. Its totient is φ = 28578300.

The previous prime is 31436137. The next prime is 31436161. The reversal of 31436141 is 14163413.

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 a cyclic number.

It is not a de Polignac number, because 31436141 - 2² = 31436137 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31436161) 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, 1428905 + ... + 1428926.

It is an arithmetic number, because the mean of its divisors is an integer number (8573496).

Almost surely, 2^31436141 is an apocalyptic number.

It is an amenable number.

31436141 is a deficient number, since it is larger than the sum of its proper divisors (2857843).

31436141 is a wasteful number, since it uses less digits than its factorization.

31436141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857842.

The product of its digits is 864, while the sum is 23.

The square root of 31436141 is about 5606.7941820616. The cubic root of 31436141 is about 315.6044194142.

Adding to 31436141 its reverse (14163413), we get a palindrome (45599554).

The spelling of 31436141 in words is "thirty-one million, four hundred thirty-six thousand, one hundred forty-one".