31436072029 has 4 divisors (see below), whose sum is σ = 31436471484. Its totient is φ = 31435672576.

The previous prime is 31436071993. The next prime is 31436072069. The reversal of 31436072029 is 92027063413.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 27988620804 + 3447451225 = 167298^2 + 58715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31436072029 is a prime.

It is a super-2 number, since 2×31436072029² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31436072069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38062 + ... + 253615.

It is an arithmetic number, because the mean of its divisors is an integer number (7859117871).

Almost surely, 2^31436072029 is an apocalyptic number.

It is an amenable number.

31436072029 is a deficient number, since it is larger than the sum of its proper divisors (399455).

31436072029 is a wasteful number, since it uses less digits than its factorization.

31436072029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399454.

The product of its (nonzero) digits is 54432, while the sum is 37.

The spelling of 31436072029 in words is "thirty-one billion, four hundred thirty-six million, seventy-two thousand, twenty-nine".