31009941 has 6 divisors (see below), whose sum is σ = 44792150. Its totient is φ = 20673288.

The previous prime is 31009939. The next prime is 31009943. The reversal of 31009941 is 14990013.

It is an interprime number because it is at equal distance from previous prime (31009939) and next prime (31009943).

It can be written as a sum of positive squares in only one way, i.e., 19980900 + 11029041 = 4470^2 + 3321^2 .

It is not a de Polignac number, because 31009941 - 2¹ = 31009939 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31009943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1722766 + ... + 1722783.

Almost surely, 2^31009941 is an apocalyptic number.

It is an amenable number.

31009941 is a deficient number, since it is larger than the sum of its proper divisors (13782209).

31009941 is a wasteful number, since it uses less digits than its factorization.

31009941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3445555 (or 3445552 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 31009941 is about 5568.6570194258. The cubic root of 31009941 is about 314.1716406451.

Adding to 31009941 its reverse (14990013), we get a palindrome (45999954).

It can be divided in two parts, 3100 and 9941, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 31009941 in words is "thirty-one million, nine thousand, nine hundred forty-one".