31429025 has 12 divisors (see below), whose sum is σ = 39041772. Its totient is φ = 25098240.

The previous prime is 31429019. The next prime is 31429043. The reversal of 31429025 is 52092413.

It can be written as a sum of positive squares in 6 ways, for example, as 169744 + 31259281 = 412^2 + 5591^2 .

It is not a de Polignac number, because 31429025 - 2⁶ = 31428961 is a prime.

It is a super-2 number, since 2×31429025² = 1975567224901250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31428985 and 31429003.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25217 + ... + 26433.

It is an arithmetic number, because the mean of its divisors is an integer number (3253481).

Almost surely, 2^31429025 is an apocalyptic number.

It is an amenable number.

31429025 is a deficient number, since it is larger than the sum of its proper divisors (7612747).

31429025 is a wasteful number, since it uses less digits than its factorization.

31429025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260 (or 2255 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 31429025 is about 5606.1595589137. The cubic root of 31429025 is about 315.5806038264.

It can be divided in two parts, 3142 and 9025, that added together give a cube (12167 = 23³).

The spelling of 31429025 in words is "thirty-one million, four hundred twenty-nine thousand, twenty-five".