31101141431 has 4 divisors (see below), whose sum is σ = 31102227192. Its totient is φ = 31100055672.

The previous prime is 31101141413. The next prime is 31101141433. The reversal of 31101141431 is 13414110113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31101141431 - 2²² = 31096947127 is a prime.

It is a super-2 number, since 2×31101141431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31101141433) 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, 498716 + ... + 557601.

It is an arithmetic number, because the mean of its divisors is an integer number (7775556798).

Almost surely, 2^31101141431 is an apocalyptic number.

31101141431 is a deficient number, since it is larger than the sum of its proper divisors (1085761).

31101141431 is a wasteful number, since it uses less digits than its factorization.

31101141431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085760.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 31101141431 its reverse (13414110113), we get a palindrome (44515251544).

The spelling of 31101141431 in words is "thirty-one billion, one hundred one million, one hundred forty-one thousand, four hundred thirty-one".