31001240429 has 2 divisors, whose sum is σ = 31001240430. Its totient is φ = 31001240428.

The previous prime is 31001240411. The next prime is 31001240461. The reversal of 31001240429 is 92404210013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19154006404 + 11847234025 = 138398^2 + 108845^2 .

It is a cyclic number.

It is not a de Polignac number, because 31001240429 - 2¹² = 31001236333 is a prime.

It is a super-2 number, since 2×31001240429² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31001240398 and 31001240407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31001240129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15500620214 + 15500620215.

It is an arithmetic number, because the mean of its divisors is an integer number (15500620215).

Almost surely, 2^31001240429 is an apocalyptic number.

It is an amenable number.

31001240429 is a deficient number, since it is larger than the sum of its proper divisors (1).

31001240429 is an equidigital number, since it uses as much as digits as its factorization.

31001240429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 31001240429 in words is "thirty-one billion, one million, two hundred forty thousand, four hundred twenty-nine".