31543053011 has 4 divisors (see below), whose sum is σ = 31620175800. Its totient is φ = 31465930224.

The previous prime is 31543052927. The next prime is 31543053013. The reversal of 31543053011 is 11035034513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11035034513 = 353 ⋅31260721.

It is a cyclic number.

It is not a de Polignac number, because 31543053011 - 2¹⁴ = 31543036627 is a prime.

It is a super-2 number, since 2×31543053011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31543053013) 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, 38560781 + ... + 38561598.

It is an arithmetic number, because the mean of its divisors is an integer number (7905043950).

Almost surely, 2^31543053011 is an apocalyptic number.

31543053011 is a deficient number, since it is larger than the sum of its proper divisors (77122789).

31543053011 is an equidigital number, since it uses as much as digits as its factorization.

31543053011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77122788.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 31543053011 its reverse (11035034513), we get a palindrome (42578087524).

The spelling of 31543053011 in words is "thirty-one billion, five hundred forty-three million, fifty-three thousand, eleven".