9781031342 has 8 divisors (see below), whose sum is σ = 14768710032. Its totient is φ = 4858128000.

The previous prime is 9781031341. The next prime is 9781031357. The reversal of 9781031342 is 2431301879.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×9781031342² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9781031296 and 9781031305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9781031341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16193459 + ... + 16194062.

It is an arithmetic number, because the mean of its divisors is an integer number (1846088754).

Almost surely, 2^9781031342 is an apocalyptic number.

9781031342 is a deficient number, since it is larger than the sum of its proper divisors (4987678690).

9781031342 is a wasteful number, since it uses less digits than its factorization.

9781031342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32387674.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 9781031342 is about 98899.0967703952. The cubic root of 9781031342 is about 2138.5933736707.

The spelling of 9781031342 in words is "nine billion, seven hundred eighty-one million, thirty-one thousand, three hundred forty-two".