31436109 has 12 divisors (see below), whose sum is σ = 45477952. Its totient is φ = 20925000.

The previous prime is 31436107. The next prime is 31436113. The reversal of 31436109 is 90163413.

31436109 is a `hidden beast` number, since 3 + 1 + 43 + 610 + 9 = 666.

It is not a de Polignac number, because 31436109 - 2¹ = 31436107 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 (31436107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4434 + ... + 9084.

Almost surely, 2^31436109 is an apocalyptic number.

It is an amenable number.

31436109 is a deficient number, since it is larger than the sum of its proper divisors (14041843).

31436109 is a wasteful number, since it uses less digits than its factorization.

31436109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5408 (or 5405 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 31436109 is about 5606.7913283803. The cubic root of 31436109 is about 315.6043123257.

The spelling of 31436109 in words is "thirty-one million, four hundred thirty-six thousand, one hundred nine".