31061404087 has 16 divisors (see below), whose sum is σ = 36652920832. Its totient is φ = 25758855360.

The previous prime is 31061404081. The next prime is 31061404093. The reversal of 31061404087 is 78040416013.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31061404081) and next prime (31061404093).

It is a de Polignac number, because none of the positive numbers 2^k-31061404087 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 (31061404081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 996523 + ... + 1027219.

It is an arithmetic number, because the mean of its divisors is an integer number (2290807552).

Almost surely, 2^31061404087 is an apocalyptic number.

31061404087 is a deficient number, since it is larger than the sum of its proper divisors (5591516745).

31061404087 is a wasteful number, since it uses less digits than its factorization.

31061404087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35398.

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 31061404087 in words is "thirty-one billion, sixty-one million, four hundred four thousand, eighty-seven".