19948031 has 2 divisors, whose sum is σ = 19948032. Its totient is φ = 19948030.

The previous prime is 19948013. The next prime is 19948057. The reversal of 19948031 is 13084991.

Together with previous prime (19948013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19948031 is a prime.

It is a super-2 number, since 2×19948031² = 795847881553922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19947982 and 19948000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19948091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9974015 + 9974016.

It is an arithmetic number, because the mean of its divisors is an integer number (9974016).

Almost surely, 2^19948031 is an apocalyptic number.

19948031 is a deficient number, since it is larger than the sum of its proper divisors (1).

19948031 is an equidigital number, since it uses as much as digits as its factorization.

19948031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 19948031 is about 4466.3218648011. The cubic root of 19948031 is about 271.2064484432.

The spelling of 19948031 in words is "nineteen million, nine hundred forty-eight thousand, thirty-one".