342047231531 has 4 divisors (see below), whose sum is σ = 342048729672. Its totient is φ = 342045733392.

The previous prime is 342047231521. The next prime is 342047231551. The reversal of 342047231531 is 135132740243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135132740243 = 31 ⋅4359120653.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342047231531 is a prime.

It is a super-2 number, since 2×342047231531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 342047231491 and 342047231500.

It is not an unprimeable number, because it can be changed into a prime (342047231521) 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, 327521 + ... + 889586.

It is an arithmetic number, because the mean of its divisors is an integer number (85512182418).

Almost surely, 2^342047231531 is an apocalyptic number.

342047231531 is a deficient number, since it is larger than the sum of its proper divisors (1498141).

342047231531 is a wasteful number, since it uses less digits than its factorization.

342047231531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498140.

The product of its (nonzero) digits is 60480, while the sum is 35.

Adding to 342047231531 its reverse (135132740243), we get a palindrome (477179971774).

The spelling of 342047231531 in words is "three hundred forty-two billion, forty-seven million, two hundred thirty-one thousand, five hundred thirty-one".