31421303042 has 16 divisors (see below), whose sum is σ = 47371780800. Its totient is φ = 15630869520.

The previous prime is 31421303041. The next prime is 31421303087. The reversal of 31421303042 is 24030312413.

It is a junction number, because it is equal to n+sod(n) for n = 31421302999 and 31421303017.

It is not an unprimeable number, because it can be changed into a prime (31421303041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358067 + ... + 437097.

It is an arithmetic number, because the mean of its divisors is an integer number (2960736300).

Almost surely, 2^31421303042 is an apocalyptic number.

31421303042 is a deficient number, since it is larger than the sum of its proper divisors (15950477758).

31421303042 is a wasteful number, since it uses less digits than its factorization.

31421303042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80041.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31421303042 its reverse (24030312413), we get a palindrome (55451615455).

The spelling of 31421303042 in words is "thirty-one billion, four hundred twenty-one million, three hundred three thousand, forty-two".