31031431141 has 2 divisors, whose sum is σ = 31031431142. Its totient is φ = 31031431140.

The previous prime is 31031431103. The next prime is 31031431147. The reversal of 31031431141 is 14113413013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30103985025 + 927446116 = 173505^2 + 30454^2 .

It is a cyclic number.

It is not a de Polignac number, because 31031431141 - 2³¹ = 28883947493 is a prime.

It is a super-3 number, since 3×31031431141³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31031431147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15515715570 + 15515715571.

It is an arithmetic number, because the mean of its divisors is an integer number (15515715571).

Almost surely, 2^31031431141 is an apocalyptic number.

It is an amenable number.

31031431141 is a deficient number, since it is larger than the sum of its proper divisors (1).

31031431141 is an equidigital number, since it uses as much as digits as its factorization.

31031431141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31031431141 its reverse (14113413013), we get a palindrome (45144844154).

The spelling of 31031431141 in words is "thirty-one billion, thirty-one million, four hundred thirty-one thousand, one hundred forty-one".