31425436042 has 128 divisors (see below), whose sum is σ = 68174346240. Its totient is φ = 10457475840.

The previous prime is 31425436027. The next prime is 31425436057. The reversal of 31425436042 is 24063452413.

It is an interprime number because it is at equal distance from previous prime (31425436027) and next prime (31425436057).

It is a junction number, because it is equal to n+sod(n) for n = 31425435989 and 31425436007.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1626028 + ... + 1645240.

It is an arithmetic number, because the mean of its divisors is an integer number (532612080).

Almost surely, 2^31425436042 is an apocalyptic number.

31425436042 is an abundant number, since it is smaller than the sum of its proper divisors (36748910198).

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

31425436042 is a wasteful number, since it uses less digits than its factorization.

31425436042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19308.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 31425436042 its reverse (24063452413), we get a palindrome (55488888455).

The spelling of 31425436042 in words is "thirty-one billion, four hundred twenty-five million, four hundred thirty-six thousand, forty-two".