31361036 has 24 divisors (see below), whose sum is σ = 62840736. Its totient is φ = 13415040.

The previous prime is 31361027. The next prime is 31361047. The reversal of 31361036 is 63016313.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28040 + ... + 29136.

It is an arithmetic number, because the mean of its divisors is an integer number (2618364).

Almost surely, 2^31361036 is an apocalyptic number.

It is an amenable number.

31361036 is an abundant number, since it is smaller than the sum of its proper divisors (31479700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31361036 is a wasteful number, since it uses less digits than its factorization.

31361036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129 (or 2127 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 31361036 is about 5600.0924992361. The cubic root of 31361036 is about 315.3528790836.

Adding to 31361036 its reverse (63016313), we get a palindrome (94377349).

The spelling of 31361036 in words is "thirty-one million, three hundred sixty-one thousand, thirty-six".