31435356642 has 64 divisors (see below), whose sum is σ = 67636456704. Its totient is φ = 9704468480.

The previous prime is 31435356613. The next prime is 31435356647. The reversal of 31435356642 is 24665353413.

It is a junction number, because it is equal to n+sod(n) for n = 31435356594 and 31435356603.

It is not an unprimeable number, because it can be changed into a prime (31435356647) 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 31 ways as a sum of consecutive naturals, for example, 4029898 + ... + 4037690.

It is an arithmetic number, because the mean of its divisors is an integer number (1056819636).

Almost surely, 2^31435356642 is an apocalyptic number.

31435356642 is an abundant number, since it is smaller than the sum of its proper divisors (36201100062).

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

31435356642 is a wasteful number, since it uses less digits than its factorization.

31435356642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8443.

The product of its digits is 777600, while the sum is 42.

The spelling of 31435356642 in words is "thirty-one billion, four hundred thirty-five million, three hundred fifty-six thousand, six hundred forty-two".