153121332 has 48 divisors (see below), whose sum is σ = 439736192. Its totient is φ = 40383360.

The previous prime is 153121321. The next prime is 153121333. The reversal of 153121332 is 233121351.

It is a super-2 number, since 2×153121332² = 46892284626908448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 153121299 and 153121308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153121333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69019 + ... + 71202.

Almost surely, 2^153121332 is an apocalyptic number.

153121332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

153121332 is an abundant number, since it is smaller than the sum of its proper divisors (286614860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

153121332 is a wasteful number, since it uses less digits than its factorization.

153121332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140248 (or 140246 counting only the distinct ones).

The product of its digits is 540, while the sum is 21.

The square root of 153121332 is about 12374.2204602957. The cubic root of 153121332 is about 534.9894684508.

Adding to 153121332 its reverse (233121351), we get a palindrome (386242683).

The spelling of 153121332 in words is "one hundred fifty-three million, one hundred twenty-one thousand, three hundred thirty-two".