31355034023 has 4 divisors (see below), whose sum is σ = 31403798328. Its totient is φ = 31306269720.

The previous prime is 31355034019. The next prime is 31355034043. The reversal of 31355034023 is 32043055313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32043055313 = 223 ⋅143690831.

It is a cyclic number.

It is not a de Polignac number, because 31355034023 - 2² = 31355034019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31355034043) 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, 24381188 + ... + 24382473.

It is an arithmetic number, because the mean of its divisors is an integer number (7850949582).

Almost surely, 2^31355034023 is an apocalyptic number.

31355034023 is a deficient number, since it is larger than the sum of its proper divisors (48764305).

31355034023 is an equidigital number, since it uses as much as digits as its factorization.

31355034023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48764304.

The product of its (nonzero) digits is 16200, while the sum is 29.

Adding to 31355034023 its reverse (32043055313), we get a palindrome (63398089336).

The spelling of 31355034023 in words is "thirty-one billion, three hundred fifty-five million, thirty-four thousand, twenty-three".