31403503642 has 32 divisors (see below), whose sum is σ = 54357747840. Its totient is φ = 13327986240.

The previous prime is 31403503631. The next prime is 31403503643. The reversal of 31403503642 is 24630530413.

It is not an unprimeable number, because it can be changed into a prime (31403503643) 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 15 ways as a sum of consecutive naturals, for example, 3592417 + ... + 3601147.

It is an arithmetic number, because the mean of its divisors is an integer number (1698679620).

Almost surely, 2^31403503642 is an apocalyptic number.

31403503642 is a deficient number, since it is larger than the sum of its proper divisors (22954244198).

31403503642 is a wasteful number, since it uses less digits than its factorization.

31403503642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11206.

The product of its (nonzero) digits is 25920, while the sum is 31.

The spelling of 31403503642 in words is "thirty-one billion, four hundred three million, five hundred three thousand, six hundred forty-two".