31011244242 has 32 divisors (see below), whose sum is σ = 67941681984. Its totient is φ = 9358348800.

The previous prime is 31011244237. The next prime is 31011244247. The reversal of 31011244242 is 24244211013.

It is an interprime number because it is at equal distance from previous prime (31011244237) and next prime (31011244247).

It is not an unprimeable number, because it can be changed into a prime (31011244247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 958923 + ... + 990734.

It is an arithmetic number, because the mean of its divisors is an integer number (2123177562).

Almost surely, 2^31011244242 is an apocalyptic number.

31011244242 is an abundant number, since it is smaller than the sum of its proper divisors (36930437742).

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

31011244242 is a wasteful number, since it uses less digits than its factorization.

31011244242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949914.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 31011244242 its reverse (24244211013), we get a palindrome (55255455255).

The spelling of 31011244242 in words is "thirty-one billion, eleven million, two hundred forty-four thousand, two hundred forty-two".